It’s truly strange that people keep citing the quality of Claude code’s leaked source as if it’s proof vibe coding doesn’t work.
If anything, it’s the exact opposite. It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
> It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
We already knew that. This is a matter of people who didn't know that or didn't want to acknowledge that thinking they now have proof that it doesn't matter for creating a crazy popular & successful product, as if it's a gotcha on those who advocate for good practices. When your goal is to create something successful that you can cash out, good practices and quality are/were never a concern. This is the basis for YAGNI, move-fast-and-break-things, and worse-is-better. We've know this since at least betamax-vs-VHS (although maybe the WiB VHS cultural knowledge is forgotten these days).
Specifically, VHS had both longer recording times and cheaper VCRs (due to Matsushita’s liberal licensing) than Betamax did. Beta only had slightly better picture quality if you were willing to sacrifice recording length per tape. Most Betamax users adopted the βII format which lowered picture quality to VHS levels in order to squeeze more recording time onto the tape. At that point Betamax’s only advantage was a slightly more compact cassette.
Also to correct another common myth, porn was widely available on both formats and was not the cause of VHS’s success over Betamax.
TBH Claude Code is surprisingly shit to use given the technical resources and the amount of money behind it. Looking past the bugs and missing features, it's so obvious it's not built by people who care about the product. It's missing all the signs of polish or signs that the developer really cares, it feels like someone shipped an internal PoC to prod and kept hacking on it. And now they are just tacking on features to sell more buzzwords and internal prototypes. Classic user facing/commercial software story.
But we (the dev community) are kind of spoiled, because we have a lot of great developer tools that come from people passionate about their work, are skilled at what they do and take pride in what they put out.
Bad code works fine until it doesn't. In my experience, with humans, doing the right thing is worth it over doing the bad thing if your time horizon is a few months. Once you're in years, absolutely do the right thing, you're actually throwing time away if you don't. And I don't mean "big refactor", I mean at-change-time, when you think "this change feels like an icky hack."
For LLMs, I don't really know. I only have a couple years experience at that.
I suspect if people saw the handwritten code of many, many, many products that they used every day they would be shocked. I've worked at BigCos and startups, and a lot of the terrible code that makes it to production was shocking when I first started.
This isn't a dig at anyone, I've certainly shipped my share of bad code as well. Deadlines, despite my wishes sometimes, continue to exist. Sometimes you have to ship a hack to make a customer or manager happy, and then replacing those hacks with better code just never happens.
For that matter, the first draft of nearly anything I write is usually not great. I might just be stupid, but I doubt I'm unique; when I've written nice, beautiful, optimized code, it's usually a second or third draft, because I ultimately I don't think I fully understand the problem and the assumptions I am allowed to make until I've finished the first draft. Usually for my personal projects, my first dozen or so commits will be pretty messy, and then I'll have cleanup branches that I merge to make the code less terrible.
This isn't inherently bad, but a lot of the time I am simply not given time to do a second or third draft of the code, because, again, deadlines, so my initial "just get it working" draft is what ships into production. I don't love it, and I kind of dread of some of the code with my name attached to it at BigCo ever gets leaked, but that's just how it is in the corporate world sometimes.
Not only true but I would guess it's the normal case. Most software is a huge pile of tech debt held together by zip-ties. Even greenfield projects quickly trend this way, as "just make it work" pressure overrides any posturing about a clean codebase.
Yes, and to add, in case it's not obvious: in my experience the maintenance, mental (and emotional costs, call me sensitive) cost of bad code compounds exponentially the more hacks you throw at it
I'm pretty sure that will be true with AI as well.
No accounting for taste, but part of makes code hard for me to reason about is when it has lots of combinatorial complexity, where the amount of states that can happen makes it difficult to know all the possible good and bad states that your program can be in. Combinatorial complexity is something that objectively can be expensive for any form of computer, be it a human brain or silicon. If the code is written in such a way that the number of correct and incorrect states are impossible to know, then the problem becomes undecidable.
I do think there is code that is "objectively" difficult to work with.
There are a number of things that make code hard to reason about for humans, and combinatorial complexity is just one of them. Another one is, say, size of working memory, or having to navigate across a large number of files to understand a piece of logic. These two examples are not necessarily expensive for computers.
I don't entirely disagree that there is code that's objectively difficult to work with, but I suspect that the Venn diagram of "code that's hard for humans" and "code that's hard for computers" has much less overlap than you're suggesting.
Certainly with current models I have found that the Venn diagram of "code that's hard for humans" and "code that's hard for computers" has actually been remarkably similar, I suspect because it's trained on a lot of terrible code on Github.
I'm sure that these models will get better, and I agree that the overlap will be lower at that point, but I still think what I said will be true.
What do you think about the argument that we are entering a world where code is so cheap to write, you can throw the old one away and build a new one after you've validated the business model, found a niche, whatever?
I mean, it seems like that has always been true to an extent, but now it may be even more true? Once you know you're sitting on a lode of gold, it's a lot easier to know how much to invest in the mine.
It hasn't always been true, it started with rapid development tools in the late 90's I believe.
And some people thought they were building "disposable" code, only to see their hacks being used for decades. I'm thinking about VB but also behemoth Excel files.
The tl;dr of this is that I don't think that the code itself is what needs to be preserved, the prompt and chat is the actual important and useful thing here. At some point I think it makes more sense to fine tune the prompts to get increasingly more specific and just regenerate the the code based on that spec, and store that in Git.
Because LLMs are designed as emulators of actual human reasoning, it wouldn't surprise me if we discover that the things that make software easy for humans to reason about also make it easier for LLMs to reason about.
Now with AI, you're not only dealing with maintenance and mental overhead, but also the overhead of the Anthropic subscription (or whatever AI company) to deal with this spaghetti. Some may decide that's an okay tradeoff, but personally it seems insane to delegate a majority of development work to a blackbox, cloud-hosted LLM that can be rug pulled from underneath of you at any moment (and you're unable to hold it accountable if it screws up)
Still, talk about "good" code exist for a reason. When the code is really bad, you end up paying the price by having to spend too more and more time and develop new features, with greater risk to introduce bugs. I've seen that in companies in the past, where bad code meant less stability and more time to ship features that we needed to retain customers or get new ones.
Now whether this is still true with AI, or if vibe coding means bad code no longer have this long term stability and velocity cost because AI are better than humans at working with this bad code... We don't know yet.
It’s also possible to sell chairs that are uncomfortable and food that tastes terrible. Yet somehow we still have carpenters and chefs; Herman Miller and The French Laundry.
Some business models will require “good” code, and some won’t. That’s how it is right now as well. But pretending that all business models will no longer require “good” code is like pretending that Michelin should’ve retired its list after the microwave was invented.
Those high end restaurants are more like art and exploration of food then something practical like code. The only similarity is maybe research in academia. There's not real industry uses of code that's like art.
I used the extreme of the spectrum, I can’t imagine you’re arguing that food is binary good / bad? There’s a litany of food options and quality, matching different business models of convenience and experience.
Research in academia seems less appropriate because that’s famously not really a business model, except maybe in the extractive sense
It depends on the urgency. Not every product is urgent. CC arguable was very urgent; even a day of delay meant the competitors could come out with something slightly more appealing.
A cornerstone of this community is "if you're not embarrassed by the first release you've waited too long to release", which is a recognition that imperfect code is not needed to create a successful business. That's why ShowHN exists.
This product rides a hype wave. This is why it is crazy popular and successful.
The situation there is akin to Viaweb - Viaweb also rode hype wave and code situation was awful as well (see PG's stories about fixing bugs during customer's issue reproduction theater).
What did Viaweb's buyer do? They rewrote thing in C++.
If history rhymes, then buyer of Anthropic would do something close to "rewrite it in C++" to the current Claude Code implementation.
This is also why they had to release it quickly. They got the first mover advantage but if they delayed to make its code better, a competitor could have taken the wave instead of them.
I don't disagree with your general premise that eventually it'll just be rewritten, but I have to push back on the idea that Anthropic will be acquired. Their most recent valuation was $380B, and even if they wanted to be acquired (which I doubt) essentially no company has the necessary capital.
Any company worth more than Anthropic could (in principle) acquire them with a share swap [1]. Even a smaller company could buy Anthropic with an LBO [2].
Still, it's probably true that Claude Code (etc) will be more successful working on clean, well-structured code, just like human coders are. So short-term, maybe not such a big deal, but long-term I think it's still an unresolved issue.
I imagine it is way more affordable in terms of tokens to implement a feature in a well organized code base, rather than a hacky mess of a codebase that is the result of 30 band-aid fixes stacked on top of each other.
- Good code is what enables you to be able to build very complex software without an unreasonable number of bugs.
- Good code is what enables you to be responsive to changing customer needs and times. Whether you view that as valuable is another matter though. I guess it is a business decision. There have been plenty of business that have gone bust though by neglecting that.
Good code is for your own sanity, the machine does not care.
I do M&As at my company - as a cto. I have seen lots of successful companies' codebases, and literally none of them elegant. Including very profitable companies with good, loved products.
The only good code I know is in the open source domain and in the demoscene. The commercial code is mostly crap - and still makes money.
Not AI but perfect example is Cloudflare. They have implemented public suffix list (to check if a domain is valid) 10 different times in 10 different ways. In one place, they have even embedded the list in frontend (pages custom domain). You report issues, they fix that one service, their own stuff isn't even aware that it exists in other places.
Yes, that is how Facebook, Yahoo and many other companies started out. But they rewrote their code when it became to big to be maintainable. The problem with shoddy code is not necessarily that it doesn't work but that it becomes impossible to change.
1. Vibe coding is a spectrum of just how much human supervision (and/or scaffolding in the form of human-written tests/specs) is involved.
2. The problem with "bad code" has nothing to do with the short-term success of the product but with the ability to evolve it successfully over time. In other words, it's about long-term success, not short-term success.
3. Perhaps most importantly, Claude Code is a fairly simple product at its core, and most of its value comes from the model, not from its own code (and the same is true on the cost side). Claude Code is relatively a low stakes product. This means that the problems caused by bad code matter less in this instance, and they're managed further by Claude Code not being at the extreme "vibey" end of the spectrum.
It kind of reminds me of grammar police type personalities. They are so hung up on the fact it reads “ugly” they can’t see the message; this code powers a rapidly growing $400B company. They admit refactoring is easy, but fail to realize they probably know that too and it’s just not a priority yet.
I read this posts and I wonder how many people are thisdelusional or dishonest. I am programmer for 40 years and in most companies 90% of coders are so called stack overflow coders or google coders. Every coder who is honest will admit it and AI is already better than those 90%.FAR better.
At least most influencer coder start to admit the fact that the code is actually awesome, if you know what you are doing.
I am more of a code reviewer and I plan the implementation, what is far more exciting than writing the code itself. I have the feeling most feel the way I do but there are still those stack ovwerflow coders who are afraid to lose their jobs. And they will.
What I'm missing so far is how they produced such awful code with the same product I'm using, which definitely would have called out some of those issues.
Perhaps the problem is getting multiple vibe-coders synced up when working on a large repo.
Right, and often the tested depth isnt maximum. So you slowly acclimate to worse and worse code practices if the effort needed to undo it is the same as doing.
It basically shifting work to future people. This mess will stop working and will introduce unsolvable obscure bugs one day, and someone actually will have to look at it.
It already costed many developers months and hundreds of dollars worth of tokens because of a bug. There will be more.
Yes that plus having tens of billions of gulf money certainly helps you subsidize your moronic failures with money that isn't yours while you continue, and fail to, achieve profitability in any time horizon within a single lifespan.
>> Also Claude owes its popularity mostly to the excellent model running behind the scenes.
It's a bit of both. Claude Code was the tool that made Anthropic's developer mindshare explode. Yes, the models are good, but before CC they were mostly just available via multiplexers like Cursor and Copilot, via the relatively expensive API.
I don't know if the comment was referring to this, but recently, people have been posting stuff about them requiring their new hire Jared Sumner, author of the Bun runtime, to first and foremost fix memory leaks that caused very high memory consumption for claude's CLI. The original source was them posting about the matter on X I think.
And at first glance, none of it was about complex runtime optimizations not present in Node, it was all "standard" closure-related JS/TS memory leak debugging (which can be a nightmare).
I don't have a link at hand because threads about it were mostly on Xitter. But I'm sure there are also more accessible retros about the posts on regular websites (HN threads, too).
After some experience, it feels to me (currently primarily a JS/TS developer) like most SPAs are ridden by memory leaks and insane memory usage. And, while it doesn't run in the browser, the same think seems to apply to Claude CLI.
Lexical closures used in long-living abstractions, especially when leveraging reactivity and similar ideas, seems to be a recipe for memory-devouring apps, regardless of browser rendering being involved or not.
The problems metastasize because most apps never run into scenarios where it matters, a page reload or exit always is close enough on the horizon to deprioritize memory usage issues.
But as soon as there are large allocations, such as the strings involved in LLM agent orchestration, or in non-trivial other scenarios, the "just ship it" approac requires careful revision.
Refactoring shit that used to "just work" with memory leaks is not always easy, no matter whose shit it is.
The people who don’t love it probably stopped using it.
You don’t have to go far on this site to find someone that doesn’t like Claude code.
If you want an example of something moronic, look at the ram usage of Claude code. It can use gigabytes of memory to work with a few megabytes of text.
There’s a sample group issue here beyond the obvious limitations of your personal experience. If they didn’t love it, they likely left it for another LLM. If they have issues with LLM’s writ large, they’re going to dislike and avoid all of them regardless.
In the current market, most people using one LLM are likely going to have a positive view of it. Very little is forcing you to stick with one you dislike aside from corporate mandates.
There have certainly been periods of irrational exuberance in the tech industry, but there are also many companies that were criticized for being unprofitable which are now, as far as I can tell, quite profitable. Amazon, Uber, I'm sure many more. I'm curious what the basis is to say that Anthropic could never achieve profitability? Are the numbers that bad?
99.999999% of products can't get away with what Anthropic is able to - this is a one in a billion disruptive product with minimal competition, and its success so far is mostly due to Claude the model, not the agent harness
Also, many of the complaints seem more like giddy joy than anything.
The negative emotion regex, for example, is only used for a log/telemetry metric. Sampling "wtf?" along would probably be enough. Why would you use an agent for that?
I don't see how a vibe-coded app is freed from the same trade-offs that apply to a fast-moving human-coded one.
Especially since a human is still driving it, thus they will take the same shortcuts they did before: instead of a formal planning phase, they'll just yolo it with the agent. Instead of cleaning up technical debt, they want to fix specific issues that are easy to review, not touch 10 files to do a refactor that's hard to review. The highest priority issues are bugs and new integrations, not tech debt, just like it always was.
This is really just a reminder of how little upside there is to coding in the open.
I think the thing is that people expect one of the largest companies in the world to have well written code.
Claude’s source code is fine for a 1-3 person team. It’s atrocious for a flagship product from a company valued over $380 BILLION.
Like if that’s the best ai coding can do given infinite money? Yeah, the emperor has no clothes. If it’s not the best that can be done, then what kinda clowns are running the show over there?
The difference here is that everyone else in this product category are also sprinting full steam ahead trying to get as many users as they can
If they DIDN'T heavily vibe-code it they might fall behind. Speed of implementation short term might beat out long-term maintenance and iteration they'd get from quality code
I just think this is the nature of all software, and it was wrong to assume AI fundamentally changes it.
Seems like you're also under the impression that privately developed software should be immaculate if the company is worth enough billions, but you'd be wrong about that too.
Yes, you would expect a company paying millions in TC to the best software developers on the planet could produce a product that is best in class, and you would get code quality for free. Except it's regularly beaten in benchmarks and user validation by open source agents, some built by a single person (pi), with horrible code quality leading to all sorts of bad UX and buggy behaviour.
Either they're massively overpaying some scrubs to underperform with the new paradigm, or they are squeezing every last drop out of vibe coding and this is the result.
Honestly for such a powerful tool, it’s pretty damn janky. Permissions don’t always work, hitting escape doesn’t always register correctly, the formatting breaks on its own to name a few of the issues i’ve had. It’s popular and successful but it’s got lots of thorns
This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about.
This is similar to retarded builders in Turkey saying “wow, I can make the same building, sell for the same price, but spend way less” and then millions of people becoming victim when there is an earthquake.
This is not how responsible people should think about things in society
> This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about.
Getting money is 100% what it is about and Claude Code is great product.
> This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about
You're not alone in thinking that, but unfortunately I think it's a minority opinion. The only thing most people and most businesses care about is money. And frankly not even longterm, sustainable money. Most companies seem happy to extract short term profits, pay out the executives with big bonuses, then rot until they collapse
I think this is a pretty interesting comment because it gets to the heart of differing views on what quality means.
For you, non-buggy software is important. You could also reasonably take a more business centered approach, where having some number of paying customers is an indicator of quality (you've built something people are willing to pay for!) Personally I lean towards the second camp, the bugs are annoying but there is a good sprinkling of magic in the product which overall makes it something I really enjoy using.
All that is to say, I don't think there is a straightforward definition of quality that everyone is going to agree on.
Hardly. Claude Code is basically just a wrapper around an LLM with a CLI.
Obviously it does some fairly smart stuff under the hood, but it's not exactly comparable to a large software project.
But to your point, that doesn't mean you can't vibe code some poorly built product and sell it. But people have always been able to sell poorly built software projects. They can just do it a bit quicker now.
>Hardly. Claude Code is basically just a wrapper around an LLM with a CLI.
I don't know why people keep acting like harnesses are all the same but we know they aren't because people have swapped them out with the same models and receive vastly different results in code quality and token use.
>. It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
The product is also a bit wonky and doesn't always provide the benefits it's hyped for. It often doesn't even produce any result for me, just keeps me waiting and waiting... and nothing happens, which is what I expect from a vibe coded app.
Yes, just get hundreds of billions of dollars in investments to build a leading product, and then use your massive legal team to force the usage of your highly subsidised and marketed subscription plan through your vibe coded software. This is excellent evidence that code doesn't matter.
> Yes, just get hundreds of billions of dollars in investments to build a leading product, and then use your massive legal team to force the usage of your highly subsidised and marketed subscription plan through your vibe coded software.
What? Your comment makes absolutely zero sense. Legal team forces people to use Claude Code?
I don't think anyone who used Claude code on the terminal had anything good to say about it. It was people using it through vs code that had a good time.
I have used Claude Code in the terminal to the tune of ~20m tokens in the last month and I have very little to complain about. There are definitely quirks that are annoying (as all software has, including vs code or jetbrains IDEs) but broadly speaking it does what it says on the tin ime
I prefer using it via the terminal. Might be anchoring bias, but I have had issues with slash commands not registering and hooks not working in the plugin.
> That wouldn’t even be a big violation of the vibe coding concept. You’re reading the innards a little but you’re only giving high-level, conceptual, abstract ideas about how problems should be solved. The machine is doing the vast majority, if not literally all, of the actual writing.
Claude Code is being produced at AI Level 7 (Human specced, bots coded), whereas the author is arguing that AI Level 6 (Bots coded, human understands somewhat) yields substantially better results. I happen to agree, but I'd like to call out that people have wildly different opinions on this; some people say that the max AI Level should be 5 (Bots coded, human understands completely), and of course some people think that you lose touch with the ground if you go above AI Level 2 (Human coded with minor assists).
It's also a context-specific scale. I work in computer vision. Building the surrounding app, UI, checkout flow, etcetera is easily Level 6/7(sorry...) on this scale.
Building the rendering pipeline, algorithms, maths, I've turned off even level 2. It is just more of a distraction than it's worth for that deep state of focus.
So I imagine at least some of the disconnect comes from the area people work in and it's novelty or complexity.
This is exactly true in my experience. The usefulness of AI varies wildly depending on the complexity, correctness-requirements, & especially novelty of the domain!
This attribute plus a bit of human tribalism, social echo-chambering, & some motivated reasoning by people with a horse in the race, explains most of the disagreement I see in rhetoric around AI.
That's an interesting list. I think that the humans that will make the most progress in the next few years are the ones that push themselves up to the highest level of that list. Right now is a period of intense disruption and there are many coders that don't like the idea that their way of life is dead. There are still blacksmiths around today but for the most part it's made by factories and cheap 3rd world labor. I think the same is currently happening with coding, except it will allow single builders and designers to do the same thing as an entire team 5 years ago.
> some people say that the max AI Level should be 5
> of course some people think that you lose touch with the ground if you go above AI Level 2
I really think that this framing sometimes causes a loss of granularity. As with most things in life, there is nuance in these approaches.
I find that nowadays for my main project I where I am really leaning into the 'autonomous engineering' concept, AI Level 7 is perfect - as long as it is qualified through rigorous QA processes on the output (ie it is not important what the code does if the output looks correct). But even in this project that I am really leaning into the AI 'hands-off' methodology, there are a few areas that dip into Level 5 or 4 depending on how well AI does them (Frontend Design especially) or on the criticality of the feature (in my case E2EE).
The most important thing is recognizing when you need to move 'up' or 'down' the scale and having an understanding of the system you are building
Thanks for that list of levels, it's helpful to understand how these things are playing out and where I'm at in relation to other engineers utilizing LLM agents.
I can say that I feel comfortable at approximately AI level 5, with occasional forays to AI level 6 when I completely understand the interface and can test it but don't fully understand the implementation. It's not really that different from working on a team, with the agent as a team member.
I'm at a 5, and only because I've implemented a lot of guardrails, am using a typed functional language with no nulls, TDD red/green, and a good amount of time spent spec'ing. No way I'd be comfortable enough this high with a dynamic language.
I could probably get to a 7 with some additional tooling and a second max 20 account, but I care too much about the product I'm building right now. Maybe for something I cared less about.
IMO if you're going 7+, you might as well just pick a statically typed and very safe (small surface area) language anyways, since you won't be coding yourself.
You aren't leveling up here... these levels are simple measures of how you use the tools to do something. You can regularly do things from any level or multiple levels at the same time.
I don't know why you're being downvoted, I agree that "more != better" with these levels. It's just a descriptor of how much human vs AI attention was given to a task/PR.
At work I am at level 4, but my side projects have embarrassingly crept into Level 6. It is very tempting to accept the features as is, without taking the time understand how it works
I’m not sure I believe that Level 7 exists for most projects. It is utterly *impossible* for most non-trivial programs to have a spec that doesn’t not have deep, carnal knowledge of the implementation. It can not be done.
For most interesting problems the spec HAS to include implementation details and architecture and critical data structures. At some point you’re still writing code, but in a different language, and it migtt hurt have actually been better to just write the damn struct declarations by hand and then let AI run with it.
I agree, I'm venturing into Level 6 myself and it often feels like being one step too high on a ladder. Level 7 feels like just standing on the very top of the ladder, which is terrifying (to me anyway as an experienced software engineer).
It looks vibe coding, or at AI coding in general, has been challenging a few empirical laws:
- Brooks' No Silver Bullet: no single technology or management technique will yield a 10-fold productivity improvement in software development within a decade. If we write a spec that details everything we want, we would write soemthing as specific as code. Currently people seem to believe that a lot of the fundamentals are well covered by existing code, so a vague lines of "build me XXX with YYY" can lead to amazing results because AI successfully transfers the world-class expertise of some engineers to generate code for such prompt, so most of the complex turns to be accidental, and we only need much fewer engineers to handle essential complexities.
- Kernighan's Law, which says debugging is twice as hard as writing the code in the first place. Now people are increasingly believing that AI can debug way faster than human (most likely because other smart people have done similar debugging already). And in the worst case, just ask AI to rewrite the code.
- Dijkstra on the foolishness of programming in natural language. Something along the line of which a system described in natural language becomes exponentially harder to manage as its size increases, whereas a system described in formal symbols grows linearly in complexity relative to its rules. Similar to above, people start to believe otherwise.
- Lehman’s Law, which states that a system's complexity increases as it evolves, unless work is done to maintain or reduce it. Similar to above, people start to believe otherwise.
- And remotely Coase's Law, which argues that firms exist because the transaction costs of using the open market are often higher than the costs of directing that same work internally through a hierarchy. People start to believe that the cost of managing and aligning agents is so low that one-person companies that handle large number of transactions will appear.
Also, ultimately Jevons Paradox, as people worry that the advances in AI will strip out so much demand that the market will slash more jobs than it will generate. I think this is the ultimate worry of many software engineers.
> Kernighan's Law, which says debugging is twice as hard as writing the code in the first place. Now people are increasingly believing that AI can debug way faster than human (most likely because other smart people have done similar debugging already). And in the worst case, just ask AI to rewrite the code.
I thought you were gonna go the opposite direction with this. Debugging is now 100x as hard as writing the code in the first place.
> Lehman’s Law, which states that as a system's complexity increases as it evolves, unless work is done to maintain or reduce it. Similar to above, people start to believe otherwise.
Gotta disagree with this too. I find a lot of work has to be done to be able to continue vibing, because complexity increases beyond LLM capabilities rapidly otherwise.
Assuming that AI challenges all that is in my perception a bit simple.
> Brooks' No Silver Bullet
Just because a person can create code or "results" much faster now, it doesn't say anything about productivity. Don't mistake dev productivity for economic productivity.
> Kernighan's Law, which says debugging is twice as hard as writing the code
Debugging is such a vague term in these matters. An AI may be decent to figure out their error they introduced into their code after it runs its own tests. But a production bug, i.e. reported from a user, can be very hard for AIs due to their utter lack of context.
> Dijkstra on the foolishness of programming in natural language.
> ...
> Lehman’s Law, which states that as a system's complexity increases as it evolves, unless work is done to maintain or reduce it.
No clue what the argument is here, "people believe otherwise" isn't.
> Also, ultimately Jevons Paradox
Actually relevant tech people confirm the paradox in the long run. Companies slash jobs now because they tend consolidate in chaotic times.
Given his background, you'd think he'd know that he should provide some evidence for his position (instead of making this completely unsupported rant).
"figure out which category each one belongs in, port the ones that are in the wrong type, and for the ones that are both, read through both versions and consolidate them into one document with the best of both.”
This is nearly as dumb as the post that "Claude code is useless because your home built "Slack App" won't be globally distributed, with multi-primary databases and redis cache layer... and won't scale beyond 50k users".
As if 97% of web apps aren't just basic CRUD with some integration to another system if you are lucky.
Distributing an app to 100 users inside an enterprise is already a hellish nightmare and I'm pretty convinced that citizen developers will never be a thing - we'll sooner reach the singularity.
When you move to the enterprise layer, suddenly you get the opposite problem, you have a low amount of "users" but you often need a load of CPU intensive or DB intensive processing to happen quickly.
One company I worked for had their system built by, ummmm, not the greatest engineers and were literally running out of time in the day to run their program.
Every client was scheduled over 24 hours, and they'd got to running the program for 22 hours per day and were desperately trying to fix it before they ran out of "time". They couldn't run it in parallel because part of the selling point of the program was that it amalgamated data from all the clients.
My favorite uses of Claude code is to do code quality improvements that would be seen as a total waste of time if I was doing them by hand, but are perfectly fine when they are done mostly for free. Looking for repetitive patterns in unit tests/functional tests. Making sure that all json serialization is done in similar patterns unless there's a particularly good reason. Looking for functions that are way too complicated, or large chunks of duplication.
The PRs that it comes with are rarely even remotely controversial, shrink the codebase, and are likely saving tokens in the end when working on a real feature, because there's less to read, and it's more boring. Some patterns are so common you can just write them down, and throw them at different repos/sections of a monorepo. It's the equivalent of linting, but at a larger scale. Make the language hesitant enough, and it won't just be a steamroller either, and mostly fix egregrious things.
But again, this is the opposite of the "vibe coding" idea, where a feature appears from thin air. Vibe Linting, I guess.
Absolutely. I've got a nice multi-paragraph prompt on hunting for subtle bugs, user expectation breaks, crufty/repeated code, useless tests (six tests that actually should be one logical flow; assertions that a ternary is still, indeed, a ternary; etc.), documentation gaps, and a few other bits and bobs.
I sick Opus, GPT5.4, and Gemini on it, have them write their own hitlists, and then have a warden Opus instance go and try to counterprove the findings, and compose a final hitlist for me, then a fresh context instance to go fix the hitlist.
They always find some little niggling thing, or inconsistency, or code organization improvement. They absolutely introduce more churn than is necessary into the codebase, but the things they catch are still a net positive, and I validate each item on the final hitlist (often editing things out if they're being overeager or have found a one in a million bug that's just not worth the fix (lately, one agent keeps getting hung up on "what if the device returns invalid serial output" in which case "yeah, we crash" is a perfectly fine response)).
This reminds me of Clayton Christensen's theory of disruption.
Disruption happens when firms are disincentivized to switch to the new thing or address the new customer because the current state of it is bad, the margins are low. Intel missed out on mobile because their existing business was so excellent and making phone chips seemed beneath them.
The funny thing is that these firms are being completely rational. Why leave behind high margins and your excellent full-featured product for this half-working new paradigm?
But then eventually, the new thing becomes good enough and overtakes the old one. Going back to the Intel example, they felt this acutely when Apple switched their desktops to ARM.
For now, Claude Code works. It's already good enough. But unless we've plateaued on AI progress, it'll surpass hand crafted equivalents on most metrics.
This isn’t the narrative, at least in any circle I speak to. The narrative is currently that everyone needs to strive to be using hundreds of dollars of tokens a day or you aren’t being effective enough. Executives are mulling getting rid of code review and tests. I’ve never seen such blind optimism and so little appreciation for how things can go wrong.
In my opinion there are two main groups on the spectrum of "vibe coding". The non technical users that love it but don't understand software engineering enough to know what it takes to make a production grade product. The opposite are the AI haters that used chatgpt 3.5 and decided LLM code is garbage.
Both of these camps are the loudest voices on the internet, but there is a quiet but extremely productive camp somewhere in the middle that has enough optimism, open mindedness along with years of experience as an engineer to push Claude Code to its limit.
I read somewhere that the difference between vibe coding and "agentic engineering" is if you are able to know what the code does. Developing a complex website with claude code is not very different than managing a team of off shore developers in terms of risks.
Unless you are writing software for medical devices, banking software, fighter jets, etc... you are doing a disservice to your career by actively avoiding using LLMs as a tool in developing software.
I have used around $2500 in claude code credits (measured with `bunx ccusage` ) the last 6 months, and 95% of what was written is never going to run on someone else's computer, yet I have been able to get ridiculous value out of it.
I don't know about direct measurements, but you definitely 'feel' it. Such as seeing that amazing visualization of Claude Code just a couple of days after the code was released. These things would not have been possible in the past.
"Laughing" at how bad the code in Claude Code is really seems to be missing the forest for the trees. Anthropic didn't set out to build a bunch of clean code when writing Claude Code. They set out to make a bunch of money, and given CC makes in the low billions of ARR, is growing rapidly, and is the clear market leader, it seems they succeeded. Given this, you would think you'd would want to approach the strategy that Anthropic used with curiosity. How can we learn from what they did?
There's nothing wrong with saying that Claude Code is written shoddily. It definitely is. But I think it should come with the recognition that Anthropic achieved all of its goals despite this. That's pretty interesting, right? I'd love to be talking about that instead.
> Then I explain what I think should be done and we’ll keep discussing it until I stop having more thoughts to give and the machine stops saying stupid things which need correcting.
Users like the author must be the most valuable Claude asset, because AI itself isn't a product — people's feedback that shapes output is.
I think it's becoming clear we're not anywhere near AGI, we figured out how to vectorize our knowledge bases and replay it back. We have a vectorized knowledge base, not an AI.
Great way of putting it. That’s clearly what it is and it’s very good at that job. But it’s insane to pretend like it can be used with minimal supervision in all or even most applications.
From a tech discourse perspective, things have never been less productive than they are right now. I feel like we’re witnessing the implosion of an industry in real time. Thanks in no small part to venture capital and its henchmen.
Everyone seems to be drinking the proverbial kool-aid, and everyone else who is looking at the situation skeptically are labeled luddites. I expect we’ll get some clarity over the next few years on who is right. But I don’t know. It feels like the breakdown of shared epistemology. The kind of shared epistemology on which civilization was built.
> In this particular case, a human could have told the machine: “There’s a lot of things that are both agents and tools. Let’s go through and make a list of all of them, look at some examples, and I’ll tell you which should be agents and which should be tools. We’ll have a discussion and figure out the general guidelines. Then we’ll audit the entire set, figure out which category each one belongs in, port the ones that are in the wrong type, and for the ones that are both, read through both versions and consolidate them into one document with the best of both.”
But that isn't the hard part. The hard part is that some people are using the tool versions and some are using the agent versions, so consolidating them one way or another will break someone's workflow, and that incurs a real actual time cost, which means this is now a ticket that needs to be prioritized and scheduled instead of being done for free.
They think their dog food tastes great now, not because they improved it any, but because they've forgotten the taste of human food. Karmically hilarious.
The ship has sailed. Vibe coding works. It will only work better in the future.
I have been programming for decades now, I have managed teams of developers. Vibe coding is great, specially in the hands of experts that know what they are doing.
Deal with it because it is not going to stop. In the near future it will be local and 100x faster.
I've been a skeptic about LLMs in general since I first heard of them. And I'm a sysadmin type, more comfortable with python scripts than writing "real" software. No formal education in coding at all other than taking Harvard's free online python course a few years ago.
So I set out to build an app with CC just to see what it's like. I currently use Copilot (copilot.money) to track my expenditures, but I've become enamored with sankey diagrams. Copilot doesn't have this charting feature, so I've been manually exporting all my transactions and massaging them in the sankey format. It's a pain in the butt, error prone, and my python skills are just not good enough to create a conversion script. So I had CC do it. After a few minutes of back and forth, it was working fine. I didn't care about spaghetti code at all.
So next I thought, how about having it generate the sankey diagrams (instead of me using sankeymatic's website). 30 minutes later, it had a local website running that was doing what I had been manually doing for months.
Now I was hooked. I started asking it to build a native GUI version (for macOS) and it dutifully cranked out a version using pyobjC etc. After ironing out a few bugs it was usable in less than 30 min. Feature adds consumed all my tokens for the day and the next day I was brimming with changes. Burned through that days tokens as well and after 3 days (I'm on the el cheapo plan), I have an app that basically does what I want in a reasonable attractive, and accurate manner.
I have no desire to look at the code. The size is relatively small, and resource usage is small as well. But it solved this one niche problem that I never had the time or skill to solve.
Is this a good thing? Will I be downvoted to oblivion? I don't know. I'm very very concerned about the long term impact of LLMs on society, technology and science. But it's very interesting to see the other side of what people are claiming.
I really identify with this. As an engineer, I really do enjoy building things. However, a lot of times, what I want is a thing that is built. A lot of time, that means I build it, which sometimes I enjoy and sometimes I don't; so many of my half finished projects are things that I still think would be awesome to have but didn't care to invest the time in building.
LLM-driven develop lets me have the thing built without needing to build the thing, and at the same time I get to exercise some ways-to-build I don't use as often (management, spec writing, spec editing, proactive unblocking, etc.). I have no doubt my work with LLMs has strengthened mental muscles that are also be helpful in technical management contexts/senior+principal-level technical work.
> The AI is very bad at spontaneously noticing, “I’ve got a lot of spaghetti code here, I should clean it up.” But if you tell it this has spaghetti code and give it some guidance (or sometimes even without guidance) it can do a good job of cleaning up the mess.
Set up an AI bot to analyze the code for spaghetti code parts and clean up these parts to turn it into a marvel. :-)
No, I completely disagree with this entire article.
Bad code or good code is no longer relevant anymore. What matters is whether or not AI fulfills the contract as to how the application is supposed to work. If the code sucks, you just rerun the prompt again and the next iteration will be better. But better doesn't matter because humans aren't reading the code anymore. I haven't written a line of code since January and I've made very large scale improvements to the products I work on. I've even stopped looking at the code at all except a cursory look out of curiosity.
Worrying about how the sausage is made is a waste of time because that's how far AI has changed the game. Code doesn't matter anymore. Whether or not code is spaghetti is irrelevant. Cutting and pasting the same code over and over again is irrelevant. If it fulfills the contract, that's all that matters. If there's a bug, you update the contract and rerun it.
This entirely depends on the product. If it’s your own personal blog, then for sure no need to read the code, but a change in a banking architecture would be irresponsible to not have an understanding of the actual code change.
> I’ll start a conversation by saying “Let’s audit this codebase for unreachable code,” or “This function makes my eyes bleed,” and we’ll have a conversation about it until something actionable comes up. Then I explain what I think should be done and we’ll keep discussing it until I stop having more thoughts
This is painful to read. It feels like rant from person who does not use version control, testing and CI.
It is cruel to force machine into guessing game with a todler whose spec is "I do not like it". If you have a coding standarts and preferences, they should be already destiled and exlained somewhere, and applied automatically (like auto linter in not so old days). Good start is to find OS projects you like, let claude review it, and generate code rule. Than run it on your code base over night, until it passes tests and new coding standarts automated code review.
The "vibe coding" is you run several agants in parallel, sometimes multiple agents on the same problem with different approach, and just do coding reviews. It is mistake to have a synchronous conversation with a machine!
This type of works needs severe automation and parallelisation.
wow - I thought it was called 'ideation' or 'brainstorming'. he didn't give it a 'spec', he started a conversation with it to see if 'something actionable comes up' - which you actually quoted, but didn't appear to read ?
You are a cog, an unfortunately necessary (currently) cost that needs to be reduced because you're decreasing profits.
This same thing has been a tension in Hollywood for many, many years. Studio execs hate creatives. They want to reduce everything they do to a formula that can be repeated en masse. It's why we get so many sequals and, most recently, so many reboots of existing properties. The real boon of streaming was that it allowed the studios to dismantle the residual system that kept people working in the industry.
You, as a software engineer, are not special. Your leadership hates you because they need you and every dollar you cost is a dollar taken from profits. It doesn't matter that you produce more value than you cost. They will still actively suppress your wages whenever they can. They will collude with other companies to do it. In the 2000s there was the hiring cartel with Apple, Google, etc. Since the pandemic, it's the ever-present layoffs that only exist to suppress wages and get more unpaid labor. People who are in fear of losing their job aren't asking for raises.
Vibe coding is just another effort to suppress engineering salaries. That's why it was created. That's why management likes it.
Management would use you as fertilizer if there was an uptick in the stock if they could get away with it.
> So pure vibe coding is a myth. But they’re still trying to do it, and this leads to some very ridiculous outcomes
creating a product in a span of mere months that millions of developers use everday is opposite of ridiculous. we wouldn't even have known about the supposed ridiculousness of code if it hadnt leaked.
I think it is a 'cult' but also at the same time the inevitable future of engineering. The cult part are a subset of people who are not thinking about LLM code generation critically and blindly follow whatever trend is popular at this exact second.
The worst thing is that everyone but them knows how easy it is to take advantage of their blind hate. News companies, podcasts, and bloggers (such as this one) know they can just twist the thumbscrew and say "AI bad!" then rake in thousands of views/subs without even having to give a substantial argument.
And they're as deterministic as as the underlying thing they're abstracting... which is kinda what makes an abstraction an abstraction.
I get that people love saying LLMs are just compilers from human language to $OUTPUT_FORMAT but... they simply are not except in a stretchy metaphorical sense.
That's only true if you reduce the definition of "compiler" to a narrow `f = In -> Out`. But that is _not_ a compiler. We have a word for that: function. And in LLM's case an impure one.
I totally see what you're saying, but to me this feels different. Compilation is a fairly mechanical and well understood process. The large language models aren't just compiling English to assembler via your chosen language, they try and guess what you want, they add extra bits you didn't ask for, they're doing some of your solution thinking for you. That feels like more than just abstraction to me.
If this is true then a PMs jira tickets are an abstraction over an engineers code. It's not necessarily wrong by some interpretations but is not how the majority of engineers would define the word.
A fundamentally unreliable one: even an AI system that is entirely correctly implemented as far as any human can see can yield wrong answers and nobody can tell why.
That’s not entirely the fault of the technology, as natural language just doesn’t make for reliable specs, especially in inexperienced hands, so in a sense we finally got the natural-language that some among our ancestors dreamed of and it turned out to be as unreliable as some others of our ancestors said all along.
It partly is the fault of the technology, however, because while you can level all the same complaints against a human programmer, a (motivated) human will generally be much better at learning from their mistakes than the current generation of LLM-based systems.
(This even if we ignore other issues, such as the fact that it leaves everybody entirely reliant on the continued support and willingness to transact of a handful of vendors in a market with a very high barrier to entry.)
The argument against this is that human coders are also non-deterministic, so does it really matter if it's a human or an AI agent producing the code – assuming the AI agent is capable of producing human-quality code or better?
I agree it's not a layer of abstraction in the traditional sense though. AI isn't an abstraction of existing code, it's a new way to produce code. It's an "abstraction layer" in the same way an IDE is is an abstraction layer.
> The argument against this is that human coders are also non-deterministic, so does it really matter if it's a human or an AI agent producing the code
Actually yes, because Humans can be held accountable for the code they produce
Holding humans accountable for code that LLMs produce would be entirely unreasonable
And no, shifting the full burden of responsibility to the human reviewing the LLM output is not reasonable either
Edit: I'm of the opinion that businesses are going to start trying to use LLMs as accountability sinks. It's no different than the driver who blames Google Maps when they drive into a river following its directions. Humans love to blame their tools.
It’s truly strange that people keep citing the quality of Claude code’s leaked source as if it’s proof vibe coding doesn’t work.
If anything, it’s the exact opposite. It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
> It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
We already knew that. This is a matter of people who didn't know that or didn't want to acknowledge that thinking they now have proof that it doesn't matter for creating a crazy popular & successful product, as if it's a gotcha on those who advocate for good practices. When your goal is to create something successful that you can cash out, good practices and quality are/were never a concern. This is the basis for YAGNI, move-fast-and-break-things, and worse-is-better. We've know this since at least betamax-vs-VHS (although maybe the WiB VHS cultural knowledge is forgotten these days).
WiB is different from Move Fast and Break Things and again different from YAGNI though.
WiB doesn't mean the thing is worse, it means it does less. Claude Code interestingly does WAY more than something like Pi which is genuinely WiB.
Move Fast and Break Things comes from the assumption that if you capture a market quick enough you will then have time to fix things.
YAGNI is simply a reminder that not preparing for contingencies can result in a simpler code base since you're unlikely to use the contingencies.
The spaghetti that people are making fun of in Claude Code is none of these things except maybe Move Fast and Break Things.
VHS was not worse is better. It’s better is better.
Specifically, VHS had both longer recording times and cheaper VCRs (due to Matsushita’s liberal licensing) than Betamax did. Beta only had slightly better picture quality if you were willing to sacrifice recording length per tape. Most Betamax users adopted the βII format which lowered picture quality to VHS levels in order to squeeze more recording time onto the tape. At that point Betamax’s only advantage was a slightly more compact cassette.
Also to correct another common myth, porn was widely available on both formats and was not the cause of VHS’s success over Betamax.
Betamax was arguably better.
https://en.wikipedia.org/wiki/Videotape_format_war
Arguably better quality, but at the cost of being shorter. In the great trade off of time, size, and quality, I think VHS chose a better combination.
Not in ways that the market cared about.
TBH Claude Code is surprisingly shit to use given the technical resources and the amount of money behind it. Looking past the bugs and missing features, it's so obvious it's not built by people who care about the product. It's missing all the signs of polish or signs that the developer really cares, it feels like someone shipped an internal PoC to prod and kept hacking on it. And now they are just tacking on features to sell more buzzwords and internal prototypes. Classic user facing/commercial software story.
But we (the dev community) are kind of spoiled, because we have a lot of great developer tools that come from people passionate about their work, are skilled at what they do and take pride in what they put out.
Bad code works fine until it doesn't. In my experience, with humans, doing the right thing is worth it over doing the bad thing if your time horizon is a few months. Once you're in years, absolutely do the right thing, you're actually throwing time away if you don't. And I don't mean "big refactor", I mean at-change-time, when you think "this change feels like an icky hack."
For LLMs, I don't really know. I only have a couple years experience at that.
If you make a working and functional bad code, and put it on maintenance mode, it can keep churning for decades with no major issues.
Everything depends on context. Most code written by humans is indeed, garbage.
The fix time horizon changes too, don't discard that.
I suspect if people saw the handwritten code of many, many, many products that they used every day they would be shocked. I've worked at BigCos and startups, and a lot of the terrible code that makes it to production was shocking when I first started.
This isn't a dig at anyone, I've certainly shipped my share of bad code as well. Deadlines, despite my wishes sometimes, continue to exist. Sometimes you have to ship a hack to make a customer or manager happy, and then replacing those hacks with better code just never happens.
For that matter, the first draft of nearly anything I write is usually not great. I might just be stupid, but I doubt I'm unique; when I've written nice, beautiful, optimized code, it's usually a second or third draft, because I ultimately I don't think I fully understand the problem and the assumptions I am allowed to make until I've finished the first draft. Usually for my personal projects, my first dozen or so commits will be pretty messy, and then I'll have cleanup branches that I merge to make the code less terrible.
This isn't inherently bad, but a lot of the time I am simply not given time to do a second or third draft of the code, because, again, deadlines, so my initial "just get it working" draft is what ships into production. I don't love it, and I kind of dread of some of the code with my name attached to it at BigCo ever gets leaked, but that's just how it is in the corporate world sometimes.
> you can build a crazy popular & successful product while violating all the traditional rules about “good” code
which has always been true
Not only true but I would guess it's the normal case. Most software is a huge pile of tech debt held together by zip-ties. Even greenfield projects quickly trend this way, as "just make it work" pressure overrides any posturing about a clean codebase.
long ago, wordpress plugins were often a proper mess
Yes, and to add, in case it's not obvious: in my experience the maintenance, mental (and emotional costs, call me sensitive) cost of bad code compounds exponentially the more hacks you throw at it
Sure, for humans. Not sure they'll be the primary readers of code going forward
I'm pretty sure that will be true with AI as well.
No accounting for taste, but part of makes code hard for me to reason about is when it has lots of combinatorial complexity, where the amount of states that can happen makes it difficult to know all the possible good and bad states that your program can be in. Combinatorial complexity is something that objectively can be expensive for any form of computer, be it a human brain or silicon. If the code is written in such a way that the number of correct and incorrect states are impossible to know, then the problem becomes undecidable.
I do think there is code that is "objectively" difficult to work with.
All the good practices about strong typing, typically in Scala or Rust, also work great for AI.
If you make sure the compiler catches most issues, AI will run it, see it doesn't build and fix what needs to be fixed.
So I agree that a lot of things that make code good, including comments and documentation, is beneficial for AI.
There are a number of things that make code hard to reason about for humans, and combinatorial complexity is just one of them. Another one is, say, size of working memory, or having to navigate across a large number of files to understand a piece of logic. These two examples are not necessarily expensive for computers.
I don't entirely disagree that there is code that's objectively difficult to work with, but I suspect that the Venn diagram of "code that's hard for humans" and "code that's hard for computers" has much less overlap than you're suggesting.
Certainly with current models I have found that the Venn diagram of "code that's hard for humans" and "code that's hard for computers" has actually been remarkably similar, I suspect because it's trained on a lot of terrible code on Github.
I'm sure that these models will get better, and I agree that the overlap will be lower at that point, but I still think what I said will be true.
What do you think about the argument that we are entering a world where code is so cheap to write, you can throw the old one away and build a new one after you've validated the business model, found a niche, whatever?
I mean, it seems like that has always been true to an extent, but now it may be even more true? Once you know you're sitting on a lode of gold, it's a lot easier to know how much to invest in the mine.
It hasn't always been true, it started with rapid development tools in the late 90's I believe.
And some people thought they were building "disposable" code, only to see their hacks being used for decades. I'm thinking about VB but also behemoth Excel files.
I actually think that might actually be a good path forward.
I hate self-promotion but I posted my opinions on this last night https://blog.tombert.com/Posts/Technical/2026/04-April/Stop-...
The tl;dr of this is that I don't think that the code itself is what needs to be preserved, the prompt and chat is the actual important and useful thing here. At some point I think it makes more sense to fine tune the prompts to get increasingly more specific and just regenerate the the code based on that spec, and store that in Git.
AIs struggle with tech debt as much if not more than humans.
Ive noticed that theyre often quite bad at refactoring, also.
Because LLMs are designed as emulators of actual human reasoning, it wouldn't surprise me if we discover that the things that make software easy for humans to reason about also make it easier for LLMs to reason about.
Now with AI, you're not only dealing with maintenance and mental overhead, but also the overhead of the Anthropic subscription (or whatever AI company) to deal with this spaghetti. Some may decide that's an okay tradeoff, but personally it seems insane to delegate a majority of development work to a blackbox, cloud-hosted LLM that can be rug pulled from underneath of you at any moment (and you're unable to hold it accountable if it screws up)
Still, talk about "good" code exist for a reason. When the code is really bad, you end up paying the price by having to spend too more and more time and develop new features, with greater risk to introduce bugs. I've seen that in companies in the past, where bad code meant less stability and more time to ship features that we needed to retain customers or get new ones.
Now whether this is still true with AI, or if vibe coding means bad code no longer have this long term stability and velocity cost because AI are better than humans at working with this bad code... We don't know yet.
It’s also possible to sell chairs that are uncomfortable and food that tastes terrible. Yet somehow we still have carpenters and chefs; Herman Miller and The French Laundry.
Some business models will require “good” code, and some won’t. That’s how it is right now as well. But pretending that all business models will no longer require “good” code is like pretending that Michelin should’ve retired its list after the microwave was invented.
Those high end restaurants are more like art and exploration of food then something practical like code. The only similarity is maybe research in academia. There's not real industry uses of code that's like art.
I used the extreme of the spectrum, I can’t imagine you’re arguing that food is binary good / bad? There’s a litany of food options and quality, matching different business models of convenience and experience.
Research in academia seems less appropriate because that’s famously not really a business model, except maybe in the extractive sense
It depends on the urgency. Not every product is urgent. CC arguable was very urgent; even a day of delay meant the competitors could come out with something slightly more appealing.
Not according to some on HN. They consider it impossible to create a successful business with imperfect code. Lol
A cornerstone of this community is "if you're not embarrassed by the first release you've waited too long to release", which is a recognition that imperfect code is not needed to create a successful business. That's why ShowHN exists.
See also Salesforce, Oracle, SAP
Wordpress hides behind a cabinet
This product rides a hype wave. This is why it is crazy popular and successful.
The situation there is akin to Viaweb - Viaweb also rode hype wave and code situation was awful as well (see PG's stories about fixing bugs during customer's issue reproduction theater).
What did Viaweb's buyer do? They rewrote thing in C++.
If history rhymes, then buyer of Anthropic would do something close to "rewrite it in C++" to the current Claude Code implementation.
This is also why they had to release it quickly. They got the first mover advantage but if they delayed to make its code better, a competitor could have taken the wave instead of them.
I don't disagree with your general premise that eventually it'll just be rewritten, but I have to push back on the idea that Anthropic will be acquired. Their most recent valuation was $380B, and even if they wanted to be acquired (which I doubt) essentially no company has the necessary capital.
Any company worth more than Anthropic could (in principle) acquire them with a share swap [1]. Even a smaller company could buy Anthropic with an LBO [2].
[1] https://en.wikipedia.org/wiki/Stock_swap
[2] https://en.wikipedia.org/wiki/Leveraged_buyout
Still, it's probably true that Claude Code (etc) will be more successful working on clean, well-structured code, just like human coders are. So short-term, maybe not such a big deal, but long-term I think it's still an unresolved issue.
I imagine it is way more affordable in terms of tokens to implement a feature in a well organized code base, rather than a hacky mess of a codebase that is the result of 30 band-aid fixes stacked on top of each other.
You can, but:
- Good code is what enables you to be able to build very complex software without an unreasonable number of bugs.
- Good code is what enables you to be responsive to changing customer needs and times. Whether you view that as valuable is another matter though. I guess it is a business decision. There have been plenty of business that have gone bust though by neglecting that.
Good code is for your own sanity, the machine does not care.
This, 100x.
I do M&As at my company - as a cto. I have seen lots of successful companies' codebases, and literally none of them elegant. Including very profitable companies with good, loved products.
The only good code I know is in the open source domain and in the demoscene. The commercial code is mostly crap - and still makes money.
This kinda puts it in words, most of us naturally expected 2025- LLMs to be able to generate OSS / demo / high craft code. Not messy commercial one.
Not AI but perfect example is Cloudflare. They have implemented public suffix list (to check if a domain is valid) 10 different times in 10 different ways. In one place, they have even embedded the list in frontend (pages custom domain). You report issues, they fix that one service, their own stuff isn't even aware that it exists in other places.
Yes, that is how Facebook, Yahoo and many other companies started out. But they rewrote their code when it became to big to be maintainable. The problem with shoddy code is not necessarily that it doesn't work but that it becomes impossible to change.
1. Vibe coding is a spectrum of just how much human supervision (and/or scaffolding in the form of human-written tests/specs) is involved.
2. The problem with "bad code" has nothing to do with the short-term success of the product but with the ability to evolve it successfully over time. In other words, it's about long-term success, not short-term success.
3. Perhaps most importantly, Claude Code is a fairly simple product at its core, and most of its value comes from the model, not from its own code (and the same is true on the cost side). Claude Code is relatively a low stakes product. This means that the problems caused by bad code matter less in this instance, and they're managed further by Claude Code not being at the extreme "vibey" end of the spectrum.
The very definition of "vibe coding" is using AI to write software and not even look at the code it produces.
It kind of reminds me of grammar police type personalities. They are so hung up on the fact it reads “ugly” they can’t see the message; this code powers a rapidly growing $400B company. They admit refactoring is easy, but fail to realize they probably know that too and it’s just not a priority yet.
They won’t stay 400B for long, and Claude Code will have no effect on that.
The underlying model powers the valuation.
Not the front end
I read this posts and I wonder how many people are thisdelusional or dishonest. I am programmer for 40 years and in most companies 90% of coders are so called stack overflow coders or google coders. Every coder who is honest will admit it and AI is already better than those 90%.FAR better. At least most influencer coder start to admit the fact that the code is actually awesome, if you know what you are doing. I am more of a code reviewer and I plan the implementation, what is far more exciting than writing the code itself. I have the feeling most feel the way I do but there are still those stack ovwerflow coders who are afraid to lose their jobs. And they will.
What I'm missing so far is how they produced such awful code with the same product I'm using, which definitely would have called out some of those issues.
Perhaps the problem is getting multiple vibe-coders synced up when working on a large repo.
I suspect a lot of it is just older, before Opus 4.5+ got good at calling out issues.
You can send a submarine down to crushing depths while violating all the traditional rules about "good" engineering, too.
Right, and often the tested depth isnt maximum. So you slowly acclimate to worse and worse code practices if the effort needed to undo it is the same as doing.
There's also a business incentive for code produced by LLM companies to be hard to maintain. So you keep needing them in the future.
It basically shifting work to future people. This mess will stop working and will introduce unsolvable obscure bugs one day, and someone actually will have to look at it.
It already costed many developers months and hundreds of dollars worth of tokens because of a bug. There will be more.
I'd imagine the AI engineers on million dollar TC are not vibe coding the models though, which is the actual sauce.
Yes that plus having tens of billions of gulf money certainly helps you subsidize your moronic failures with money that isn't yours while you continue, and fail to, achieve profitability in any time horizon within a single lifespan.
Also Claude owes its popularity mostly to the excellent model running behind the scenes.
The tooling can be hacky and of questionable quality yet, with such a model, things can still work out pretty well.
The moat is their training and fine-tuning for common programming languages.
>> Also Claude owes its popularity mostly to the excellent model running behind the scenes.
It's a bit of both. Claude Code was the tool that made Anthropic's developer mindshare explode. Yes, the models are good, but before CC they were mostly just available via multiplexers like Cursor and Copilot, via the relatively expensive API.
Huh what moronic failure did Anthropic do? Every Claude Code user I know loves it.
I don’t know about moronic, but:
https://github.com/ctoth/claude-failures
https://github.com/anthropics/claude-code/issues/42796
I don't know if the comment was referring to this, but recently, people have been posting stuff about them requiring their new hire Jared Sumner, author of the Bun runtime, to first and foremost fix memory leaks that caused very high memory consumption for claude's CLI. The original source was them posting about the matter on X I think.
And at first glance, none of it was about complex runtime optimizations not present in Node, it was all "standard" closure-related JS/TS memory leak debugging (which can be a nightmare).
I don't have a link at hand because threads about it were mostly on Xitter. But I'm sure there are also more accessible retros about the posts on regular websites (HN threads, too).
Ah I believe codex has similar issues. Terrible code quality but goes to show it doesn't really matter in the end.
> it doesn't really matter in the end
if you have one of the top models in a disruptive new product category where everyone else is sprinting also, sure..
Yes that was pretty much my own takeaway, too.
After some experience, it feels to me (currently primarily a JS/TS developer) like most SPAs are ridden by memory leaks and insane memory usage. And, while it doesn't run in the browser, the same think seems to apply to Claude CLI.
Lexical closures used in long-living abstractions, especially when leveraging reactivity and similar ideas, seems to be a recipe for memory-devouring apps, regardless of browser rendering being involved or not.
The problems metastasize because most apps never run into scenarios where it matters, a page reload or exit always is close enough on the horizon to deprioritize memory usage issues.
But as soon as there are large allocations, such as the strings involved in LLM agent orchestration, or in non-trivial other scenarios, the "just ship it" approac requires careful revision.
Refactoring shit that used to "just work" with memory leaks is not always easy, no matter whose shit it is.
The people who don’t love it probably stopped using it.
You don’t have to go far on this site to find someone that doesn’t like Claude code.
If you want an example of something moronic, look at the ram usage of Claude code. It can use gigabytes of memory to work with a few megabytes of text.
Recently there was a bug where CC would consume day/week/month quota in just a few hours, or hundreds of dollars in API costs in a few prompts.
There is right now another HN thread where a lot of users hate Claude Code.
To be fair, their complaints are about very recent changes that break their workflow, while previously they were quite content with it.
I've used and hate it, it's garbage.
There’s a sample group issue here beyond the obvious limitations of your personal experience. If they didn’t love it, they likely left it for another LLM. If they have issues with LLM’s writ large, they’re going to dislike and avoid all of them regardless.
In the current market, most people using one LLM are likely going to have a positive view of it. Very little is forcing you to stick with one you dislike aside from corporate mandates.
There have certainly been periods of irrational exuberance in the tech industry, but there are also many companies that were criticized for being unprofitable which are now, as far as I can tell, quite profitable. Amazon, Uber, I'm sure many more. I'm curious what the basis is to say that Anthropic could never achieve profitability? Are the numbers that bad?
your prediction is going to be wrong, even with all those caveats
99.999999% of products can't get away with what Anthropic is able to - this is a one in a billion disruptive product with minimal competition, and its success so far is mostly due to Claude the model, not the agent harness
devaluing craftsmanship is fundamentally insulting.
Also, many of the complaints seem more like giddy joy than anything.
The negative emotion regex, for example, is only used for a log/telemetry metric. Sampling "wtf?" along would probably be enough. Why would you use an agent for that?
I don't see how a vibe-coded app is freed from the same trade-offs that apply to a fast-moving human-coded one.
Especially since a human is still driving it, thus they will take the same shortcuts they did before: instead of a formal planning phase, they'll just yolo it with the agent. Instead of cleaning up technical debt, they want to fix specific issues that are easy to review, not touch 10 files to do a refactor that's hard to review. The highest priority issues are bugs and new integrations, not tech debt, just like it always was.
This is really just a reminder of how little upside there is to coding in the open.
I think the thing is that people expect one of the largest companies in the world to have well written code.
Claude’s source code is fine for a 1-3 person team. It’s atrocious for a flagship product from a company valued over $380 BILLION.
Like if that’s the best ai coding can do given infinite money? Yeah, the emperor has no clothes. If it’s not the best that can be done, then what kinda clowns are running the show over there?
The difference here is that everyone else in this product category are also sprinting full steam ahead trying to get as many users as they can
If they DIDN'T heavily vibe-code it they might fall behind. Speed of implementation short term might beat out long-term maintenance and iteration they'd get from quality code
They're just taking on massive tech debt
I just think this is the nature of all software, and it was wrong to assume AI fundamentally changes it.
Seems like you're also under the impression that privately developed software should be immaculate if the company is worth enough billions, but you'd be wrong about that too.
Yes, you would expect a company paying millions in TC to the best software developers on the planet could produce a product that is best in class, and you would get code quality for free. Except it's regularly beaten in benchmarks and user validation by open source agents, some built by a single person (pi), with horrible code quality leading to all sorts of bad UX and buggy behaviour.
Either they're massively overpaying some scrubs to underperform with the new paradigm, or they are squeezing every last drop out of vibe coding and this is the result.
Do we know if the original code was vibe coded? It's like chicken and an egg dilemma.
It's not a chicken and egg dilemma, the model can be used independently of Claude to write code, the heavy lifting is still done on their servers.
Honestly for such a powerful tool, it’s pretty damn janky. Permissions don’t always work, hitting escape doesn’t always register correctly, the formatting breaks on its own to name a few of the issues i’ve had. It’s popular and successful but it’s got lots of thorns
The model is the product.
It shows that you can have a garbage front end if people perceive value in your back end.
It also means that any competitor that improves on this part of the experience is going to eat your lunch.
This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about.
This is similar to retarded builders in Turkey saying “wow, I can make the same building, sell for the same price, but spend way less” and then millions of people becoming victim when there is an earthquake.
This is not how responsible people should think about things in society
> This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about.
Getting money is 100% what it is about and Claude Code is great product.
Nobody rewards responsibility though. It's all about making number go up.
...go up as fast as possible.
> This is a really wrong perspective on software. Short term monkey style coding does not produce products. You might get money but that is not what it is about
You're not alone in thinking that, but unfortunately I think it's a minority opinion. The only thing most people and most businesses care about is money. And frankly not even longterm, sustainable money. Most companies seem happy to extract short term profits, pay out the executives with big bonuses, then rot until they collapse
Its a buggy pos though, "popular and successful" have never been indicators of quality in any sense.
I think this is a pretty interesting comment because it gets to the heart of differing views on what quality means.
For you, non-buggy software is important. You could also reasonably take a more business centered approach, where having some number of paying customers is an indicator of quality (you've built something people are willing to pay for!) Personally I lean towards the second camp, the bugs are annoying but there is a good sprinkling of magic in the product which overall makes it something I really enjoy using.
All that is to say, I don't think there is a straightforward definition of quality that everyone is going to agree on.
ok, well if youd like to trade in 14billion dollars of revenue for better quality feel free.
Value to customer. Literally the only thing that matters.
Value isn't a one-shot, though. Value sustained over time is what matters.
Well, if unmaintainable code gets in the way of the "sustained over time" part, then that is still a real problem.
I think it is crazy popular for the model and not the crappy vibe code.
Hardly. Claude Code is basically just a wrapper around an LLM with a CLI.
Obviously it does some fairly smart stuff under the hood, but it's not exactly comparable to a large software project.
But to your point, that doesn't mean you can't vibe code some poorly built product and sell it. But people have always been able to sell poorly built software projects. They can just do it a bit quicker now.
>Hardly. Claude Code is basically just a wrapper around an LLM with a CLI.
I don't know why people keep acting like harnesses are all the same but we know they aren't because people have swapped them out with the same models and receive vastly different results in code quality and token use.
>. It shows that you can build a crazy popular & successful product while violating all the traditional rules about “good” code.
The product is also a bit wonky and doesn't always provide the benefits it's hyped for. It often doesn't even produce any result for me, just keeps me waiting and waiting... and nothing happens, which is what I expect from a vibe coded app.
Yes, just get hundreds of billions of dollars in investments to build a leading product, and then use your massive legal team to force the usage of your highly subsidised and marketed subscription plan through your vibe coded software. This is excellent evidence that code doesn't matter.
> Yes, just get hundreds of billions of dollars in investments to build a leading product, and then use your massive legal team to force the usage of your highly subsidised and marketed subscription plan through your vibe coded software.
What? Your comment makes absolutely zero sense. Legal team forces people to use Claude Code?
I know this isn't your point, but Anthropic has raised about $70 billion, not "hundreds of billions".
And they don't need a massive legal team to declare that you can't use their software subscription with other people's software.
I don't think anyone who used Claude code on the terminal had anything good to say about it. It was people using it through vs code that had a good time.
I have used Claude Code in the terminal to the tune of ~20m tokens in the last month and I have very little to complain about. There are definitely quirks that are annoying (as all software has, including vs code or jetbrains IDEs) but broadly speaking it does what it says on the tin ime
I prefer using it via the terminal. Might be anchoring bias, but I have had issues with slash commands not registering and hooks not working in the plugin.
> That wouldn’t even be a big violation of the vibe coding concept. You’re reading the innards a little but you’re only giving high-level, conceptual, abstract ideas about how problems should be solved. The machine is doing the vast majority, if not literally all, of the actual writing.
Claude Code is being produced at AI Level 7 (Human specced, bots coded), whereas the author is arguing that AI Level 6 (Bots coded, human understands somewhat) yields substantially better results. I happen to agree, but I'd like to call out that people have wildly different opinions on this; some people say that the max AI Level should be 5 (Bots coded, human understands completely), and of course some people think that you lose touch with the ground if you go above AI Level 2 (Human coded with minor assists).
[0] https://visidata.org/ai
It's also a context-specific scale. I work in computer vision. Building the surrounding app, UI, checkout flow, etcetera is easily Level 6/7(sorry...) on this scale.
Building the rendering pipeline, algorithms, maths, I've turned off even level 2. It is just more of a distraction than it's worth for that deep state of focus.
So I imagine at least some of the disconnect comes from the area people work in and it's novelty or complexity.
This is exactly true in my experience. The usefulness of AI varies wildly depending on the complexity, correctness-requirements, & especially novelty of the domain!
This attribute plus a bit of human tribalism, social echo-chambering, & some motivated reasoning by people with a horse in the race, explains most of the disagreement I see in rhetoric around AI.
am layman. is CV "solved" at this point, or is there more work to be done?
That's an interesting list. I think that the humans that will make the most progress in the next few years are the ones that push themselves up to the highest level of that list. Right now is a period of intense disruption and there are many coders that don't like the idea that their way of life is dead. There are still blacksmiths around today but for the most part it's made by factories and cheap 3rd world labor. I think the same is currently happening with coding, except it will allow single builders and designers to do the same thing as an entire team 5 years ago.
For certain kinds of software (financial systems, safety-critical systems) it may be very unwise to go beyond level 5.
There may be certain fields where you can't even get to 5.
> some people say that the max AI Level should be 5
> of course some people think that you lose touch with the ground if you go above AI Level 2
I really think that this framing sometimes causes a loss of granularity. As with most things in life, there is nuance in these approaches.
I find that nowadays for my main project I where I am really leaning into the 'autonomous engineering' concept, AI Level 7 is perfect - as long as it is qualified through rigorous QA processes on the output (ie it is not important what the code does if the output looks correct). But even in this project that I am really leaning into the AI 'hands-off' methodology, there are a few areas that dip into Level 5 or 4 depending on how well AI does them (Frontend Design especially) or on the criticality of the feature (in my case E2EE).
The most important thing is recognizing when you need to move 'up' or 'down' the scale and having an understanding of the system you are building
> https://visidata.org/ai
Thanks for that list of levels, it's helpful to understand how these things are playing out and where I'm at in relation to other engineers utilizing LLM agents.
I can say that I feel comfortable at approximately AI level 5, with occasional forays to AI level 6 when I completely understand the interface and can test it but don't fully understand the implementation. It's not really that different from working on a team, with the agent as a team member.
I'm at a 5, and only because I've implemented a lot of guardrails, am using a typed functional language with no nulls, TDD red/green, and a good amount of time spent spec'ing. No way I'd be comfortable enough this high with a dynamic language.
I could probably get to a 7 with some additional tooling and a second max 20 account, but I care too much about the product I'm building right now. Maybe for something I cared less about.
IMO if you're going 7+, you might as well just pick a statically typed and very safe (small surface area) language anyways, since you won't be coding yourself.
You aren't leveling up here... these levels are simple measures of how you use the tools to do something. You can regularly do things from any level or multiple levels at the same time.
I don't know why you're being downvoted, I agree that "more != better" with these levels. It's just a descriptor of how much human vs AI attention was given to a task/PR.
At work I am at level 4, but my side projects have embarrassingly crept into Level 6. It is very tempting to accept the features as is, without taking the time understand how it works
Interesting breakdown of levels. I like it.
I’m not sure I believe that Level 7 exists for most projects. It is utterly *impossible* for most non-trivial programs to have a spec that doesn’t not have deep, carnal knowledge of the implementation. It can not be done.
For most interesting problems the spec HAS to include implementation details and architecture and critical data structures. At some point you’re still writing code, but in a different language, and it migtt hurt have actually been better to just write the damn struct declarations by hand and then let AI run with it.
I agree, I'm venturing into Level 6 myself and it often feels like being one step too high on a ladder. Level 7 feels like just standing on the very top of the ladder, which is terrifying (to me anyway as an experienced software engineer).
It looks vibe coding, or at AI coding in general, has been challenging a few empirical laws:
- Brooks' No Silver Bullet: no single technology or management technique will yield a 10-fold productivity improvement in software development within a decade. If we write a spec that details everything we want, we would write soemthing as specific as code. Currently people seem to believe that a lot of the fundamentals are well covered by existing code, so a vague lines of "build me XXX with YYY" can lead to amazing results because AI successfully transfers the world-class expertise of some engineers to generate code for such prompt, so most of the complex turns to be accidental, and we only need much fewer engineers to handle essential complexities.
- Kernighan's Law, which says debugging is twice as hard as writing the code in the first place. Now people are increasingly believing that AI can debug way faster than human (most likely because other smart people have done similar debugging already). And in the worst case, just ask AI to rewrite the code.
- Dijkstra on the foolishness of programming in natural language. Something along the line of which a system described in natural language becomes exponentially harder to manage as its size increases, whereas a system described in formal symbols grows linearly in complexity relative to its rules. Similar to above, people start to believe otherwise.
- Lehman’s Law, which states that a system's complexity increases as it evolves, unless work is done to maintain or reduce it. Similar to above, people start to believe otherwise.
- And remotely Coase's Law, which argues that firms exist because the transaction costs of using the open market are often higher than the costs of directing that same work internally through a hierarchy. People start to believe that the cost of managing and aligning agents is so low that one-person companies that handle large number of transactions will appear.
Also, ultimately Jevons Paradox, as people worry that the advances in AI will strip out so much demand that the market will slash more jobs than it will generate. I think this is the ultimate worry of many software engineers.
Intereting times.
> Kernighan's Law, which says debugging is twice as hard as writing the code in the first place. Now people are increasingly believing that AI can debug way faster than human (most likely because other smart people have done similar debugging already). And in the worst case, just ask AI to rewrite the code.
I thought you were gonna go the opposite direction with this. Debugging is now 100x as hard as writing the code in the first place.
> Lehman’s Law, which states that as a system's complexity increases as it evolves, unless work is done to maintain or reduce it. Similar to above, people start to believe otherwise.
Gotta disagree with this too. I find a lot of work has to be done to be able to continue vibing, because complexity increases beyond LLM capabilities rapidly otherwise.
Assuming that AI challenges all that is in my perception a bit simple.
> Brooks' No Silver Bullet
Just because a person can create code or "results" much faster now, it doesn't say anything about productivity. Don't mistake dev productivity for economic productivity.
> Kernighan's Law, which says debugging is twice as hard as writing the code
Debugging is such a vague term in these matters. An AI may be decent to figure out their error they introduced into their code after it runs its own tests. But a production bug, i.e. reported from a user, can be very hard for AIs due to their utter lack of context.
> Dijkstra on the foolishness of programming in natural language. > ... > Lehman’s Law, which states that as a system's complexity increases as it evolves, unless work is done to maintain or reduce it.
No clue what the argument is here, "people believe otherwise" isn't.
> Also, ultimately Jevons Paradox
Actually relevant tech people confirm the paradox in the long run. Companies slash jobs now because they tend consolidate in chaotic times.
> And in the worst case, just ask AI to rewrite the code.
"And in the worst case just pay for it twice."
That leads to a dead end.
This is the guy that created bittorrent, btw. I know that was a long time ago, but he's not just some random blogger.
99% of people here dont know what is bittorrent. but they can vibe it :)
Glad to see Bram getting into things lately. Second appearance on HN
Given his background, you'd think he'd know that he should provide some evidence for his position (instead of making this completely unsupported rant).
I think you're interpreting the structure and goal of "Bram's Thoughts" wrong. It's a guy's blog, not a thesis defense.
It's a blog post, not an academic paper. Do you cite every source when you're conversing with colleagues?
"figure out which category each one belongs in, port the ones that are in the wrong type, and for the ones that are both, read through both versions and consolidate them into one document with the best of both.”
prompt saved!
This is nearly as dumb as the post that "Claude code is useless because your home built "Slack App" won't be globally distributed, with multi-primary databases and redis cache layer... and won't scale beyond 50k users".
As if 97% of web apps aren't just basic CRUD with some integration to another system if you are lucky.
99% of companies won't even have 50k users.
Distributing an app to 100 users inside an enterprise is already a hellish nightmare and I'm pretty convinced that citizen developers will never be a thing - we'll sooner reach the singularity.
That's not actually true.
When you move to the enterprise layer, suddenly you get the opposite problem, you have a low amount of "users" but you often need a load of CPU intensive or DB intensive processing to happen quickly.
One company I worked for had their system built by, ummmm, not the greatest engineers and were literally running out of time in the day to run their program.
Every client was scheduled over 24 hours, and they'd got to running the program for 22 hours per day and were desperately trying to fix it before they ran out of "time". They couldn't run it in parallel because part of the selling point of the program was that it amalgamated data from all the clients.
Well, users or _paying_ users?
It's an important distinction
Probably either. And excluding non-paying users only further narrows the applicability.
My favorite uses of Claude code is to do code quality improvements that would be seen as a total waste of time if I was doing them by hand, but are perfectly fine when they are done mostly for free. Looking for repetitive patterns in unit tests/functional tests. Making sure that all json serialization is done in similar patterns unless there's a particularly good reason. Looking for functions that are way too complicated, or large chunks of duplication.
The PRs that it comes with are rarely even remotely controversial, shrink the codebase, and are likely saving tokens in the end when working on a real feature, because there's less to read, and it's more boring. Some patterns are so common you can just write them down, and throw them at different repos/sections of a monorepo. It's the equivalent of linting, but at a larger scale. Make the language hesitant enough, and it won't just be a steamroller either, and mostly fix egregrious things.
But again, this is the opposite of the "vibe coding" idea, where a feature appears from thin air. Vibe Linting, I guess.
Absolutely. I've got a nice multi-paragraph prompt on hunting for subtle bugs, user expectation breaks, crufty/repeated code, useless tests (six tests that actually should be one logical flow; assertions that a ternary is still, indeed, a ternary; etc.), documentation gaps, and a few other bits and bobs.
I sick Opus, GPT5.4, and Gemini on it, have them write their own hitlists, and then have a warden Opus instance go and try to counterprove the findings, and compose a final hitlist for me, then a fresh context instance to go fix the hitlist.
They always find some little niggling thing, or inconsistency, or code organization improvement. They absolutely introduce more churn than is necessary into the codebase, but the things they catch are still a net positive, and I validate each item on the final hitlist (often editing things out if they're being overeager or have found a one in a million bug that's just not worth the fix (lately, one agent keeps getting hung up on "what if the device returns invalid serial output" in which case "yeah, we crash" is a perfectly fine response)).
This reminds me of Clayton Christensen's theory of disruption.
Disruption happens when firms are disincentivized to switch to the new thing or address the new customer because the current state of it is bad, the margins are low. Intel missed out on mobile because their existing business was so excellent and making phone chips seemed beneath them.
The funny thing is that these firms are being completely rational. Why leave behind high margins and your excellent full-featured product for this half-working new paradigm?
But then eventually, the new thing becomes good enough and overtakes the old one. Going back to the Intel example, they felt this acutely when Apple switched their desktops to ARM.
For now, Claude Code works. It's already good enough. But unless we've plateaued on AI progress, it'll surpass hand crafted equivalents on most metrics.
This isn’t the narrative, at least in any circle I speak to. The narrative is currently that everyone needs to strive to be using hundreds of dollars of tokens a day or you aren’t being effective enough. Executives are mulling getting rid of code review and tests. I’ve never seen such blind optimism and so little appreciation for how things can go wrong.
Even if AI progress plateaus, I'm confident we would build tooling and patterns around the current models that would surpass hand crafted equivalents.
In my opinion there are two main groups on the spectrum of "vibe coding". The non technical users that love it but don't understand software engineering enough to know what it takes to make a production grade product. The opposite are the AI haters that used chatgpt 3.5 and decided LLM code is garbage.
Both of these camps are the loudest voices on the internet, but there is a quiet but extremely productive camp somewhere in the middle that has enough optimism, open mindedness along with years of experience as an engineer to push Claude Code to its limit.
I read somewhere that the difference between vibe coding and "agentic engineering" is if you are able to know what the code does. Developing a complex website with claude code is not very different than managing a team of off shore developers in terms of risks.
Unless you are writing software for medical devices, banking software, fighter jets, etc... you are doing a disservice to your career by actively avoiding using LLMs as a tool in developing software.
I have used around $2500 in claude code credits (measured with `bunx ccusage` ) the last 6 months, and 95% of what was written is never going to run on someone else's computer, yet I have been able to get ridiculous value out of it.
> extremely productive camp somewhere in the middle
How do you quantify and measure this productivity gain?
I don't know about direct measurements, but you definitely 'feel' it. Such as seeing that amazing visualization of Claude Code just a couple of days after the code was released. These things would not have been possible in the past.
"Laughing" at how bad the code in Claude Code is really seems to be missing the forest for the trees. Anthropic didn't set out to build a bunch of clean code when writing Claude Code. They set out to make a bunch of money, and given CC makes in the low billions of ARR, is growing rapidly, and is the clear market leader, it seems they succeeded. Given this, you would think you'd would want to approach the strategy that Anthropic used with curiosity. How can we learn from what they did?
There's nothing wrong with saying that Claude Code is written shoddily. It definitely is. But I think it should come with the recognition that Anthropic achieved all of its goals despite this. That's pretty interesting, right? I'd love to be talking about that instead.
> Then I explain what I think should be done and we’ll keep discussing it until I stop having more thoughts to give and the machine stops saying stupid things which need correcting.
Users like the author must be the most valuable Claude asset, because AI itself isn't a product — people's feedback that shapes output is.
> Users like the author
He’s a pretty interesting fella, I imagine his work influenced a lot of people over the years
https://en.wikipedia.org/wiki/Bram_Cohen
And this is actually sad. I wish programmer like Bram Cohen spent their time teaching other people instead of a chat model.
I think it's becoming clear we're not anywhere near AGI, we figured out how to vectorize our knowledge bases and replay it back. We have a vectorized knowledge base, not an AI.
I like Tesler’s Theorem, which I recently heard about:
> AI is whatever hasn’t been done yet
Great way of putting it. That’s clearly what it is and it’s very good at that job. But it’s insane to pretend like it can be used with minimal supervision in all or even most applications.
From a tech discourse perspective, things have never been less productive than they are right now. I feel like we’re witnessing the implosion of an industry in real time. Thanks in no small part to venture capital and its henchmen.
Everyone seems to be drinking the proverbial kool-aid, and everyone else who is looking at the situation skeptically are labeled luddites. I expect we’ll get some clarity over the next few years on who is right. But I don’t know. It feels like the breakdown of shared epistemology. The kind of shared epistemology on which civilization was built.
> In this particular case, a human could have told the machine: “There’s a lot of things that are both agents and tools. Let’s go through and make a list of all of them, look at some examples, and I’ll tell you which should be agents and which should be tools. We’ll have a discussion and figure out the general guidelines. Then we’ll audit the entire set, figure out which category each one belongs in, port the ones that are in the wrong type, and for the ones that are both, read through both versions and consolidate them into one document with the best of both.”
But that isn't the hard part. The hard part is that some people are using the tool versions and some are using the agent versions, so consolidating them one way or another will break someone's workflow, and that incurs a real actual time cost, which means this is now a ticket that needs to be prioritized and scheduled instead of being done for free.
They think their dog food tastes great now, not because they improved it any, but because they've forgotten the taste of human food. Karmically hilarious.
"Ladran, Sancho, señal que cabalgamos"
The ship has sailed. Vibe coding works. It will only work better in the future.
I have been programming for decades now, I have managed teams of developers. Vibe coding is great, specially in the hands of experts that know what they are doing.
Deal with it because it is not going to stop. In the near future it will be local and 100x faster.
"Aunque la mona se vista de seda mona se queda".
A pig with lipstick it's still a pig.
Or, aptly, as you quoted "Don Quixote":
'Con la iglesia hemos topado'.
(indeed Sancho), we just met the Church...
An expert doesn’t deploy code without reviewing it, at that point they’re vibe engineering not vibe coding.
I've been a skeptic about LLMs in general since I first heard of them. And I'm a sysadmin type, more comfortable with python scripts than writing "real" software. No formal education in coding at all other than taking Harvard's free online python course a few years ago.
So I set out to build an app with CC just to see what it's like. I currently use Copilot (copilot.money) to track my expenditures, but I've become enamored with sankey diagrams. Copilot doesn't have this charting feature, so I've been manually exporting all my transactions and massaging them in the sankey format. It's a pain in the butt, error prone, and my python skills are just not good enough to create a conversion script. So I had CC do it. After a few minutes of back and forth, it was working fine. I didn't care about spaghetti code at all.
So next I thought, how about having it generate the sankey diagrams (instead of me using sankeymatic's website). 30 minutes later, it had a local website running that was doing what I had been manually doing for months.
Now I was hooked. I started asking it to build a native GUI version (for macOS) and it dutifully cranked out a version using pyobjC etc. After ironing out a few bugs it was usable in less than 30 min. Feature adds consumed all my tokens for the day and the next day I was brimming with changes. Burned through that days tokens as well and after 3 days (I'm on the el cheapo plan), I have an app that basically does what I want in a reasonable attractive, and accurate manner.
I have no desire to look at the code. The size is relatively small, and resource usage is small as well. But it solved this one niche problem that I never had the time or skill to solve.
Is this a good thing? Will I be downvoted to oblivion? I don't know. I'm very very concerned about the long term impact of LLMs on society, technology and science. But it's very interesting to see the other side of what people are claiming.
I really identify with this. As an engineer, I really do enjoy building things. However, a lot of times, what I want is a thing that is built. A lot of time, that means I build it, which sometimes I enjoy and sometimes I don't; so many of my half finished projects are things that I still think would be awesome to have but didn't care to invest the time in building.
LLM-driven develop lets me have the thing built without needing to build the thing, and at the same time I get to exercise some ways-to-build I don't use as often (management, spec writing, spec editing, proactive unblocking, etc.). I have no doubt my work with LLMs has strengthened mental muscles that are also be helpful in technical management contexts/senior+principal-level technical work.
> The AI is very bad at spontaneously noticing, “I’ve got a lot of spaghetti code here, I should clean it up.” But if you tell it this has spaghetti code and give it some guidance (or sometimes even without guidance) it can do a good job of cleaning up the mess.
Set up an AI bot to analyze the code for spaghetti code parts and clean up these parts to turn it into a marvel. :-)
OT: I really enjoy Bram's takes, he's brilliant and prickly in the best ways.
I had to stop reading halfway through this article, my straw allergy had me sneezing uncontrollably at all the strawmen in there!
I feel like vibe coding a product is functionally the same as prototyping.
In the past, which is a different country, we would throw away the prototypes.
Nowadays vibe coding just keeps adding to them.
No, I completely disagree with this entire article.
Bad code or good code is no longer relevant anymore. What matters is whether or not AI fulfills the contract as to how the application is supposed to work. If the code sucks, you just rerun the prompt again and the next iteration will be better. But better doesn't matter because humans aren't reading the code anymore. I haven't written a line of code since January and I've made very large scale improvements to the products I work on. I've even stopped looking at the code at all except a cursory look out of curiosity.
Worrying about how the sausage is made is a waste of time because that's how far AI has changed the game. Code doesn't matter anymore. Whether or not code is spaghetti is irrelevant. Cutting and pasting the same code over and over again is irrelevant. If it fulfills the contract, that's all that matters. If there's a bug, you update the contract and rerun it.
Someone vibe-coded the brake control system in your car. It passes the tests. Is it good enough for you?
This entirely depends on the product. If it’s your own personal blog, then for sure no need to read the code, but a change in a banking architecture would be irresponsible to not have an understanding of the actual code change.
Can they ask the Claude to clean up the duplication etc its English code?
almost as insane as your dumb crypto project
the simple truth is all code is garbage
> I’ll start a conversation by saying “Let’s audit this codebase for unreachable code,” or “This function makes my eyes bleed,” and we’ll have a conversation about it until something actionable comes up. Then I explain what I think should be done and we’ll keep discussing it until I stop having more thoughts
This is painful to read. It feels like rant from person who does not use version control, testing and CI.
It is cruel to force machine into guessing game with a todler whose spec is "I do not like it". If you have a coding standarts and preferences, they should be already destiled and exlained somewhere, and applied automatically (like auto linter in not so old days). Good start is to find OS projects you like, let claude review it, and generate code rule. Than run it on your code base over night, until it passes tests and new coding standarts automated code review.
The "vibe coding" is you run several agants in parallel, sometimes multiple agents on the same problem with different approach, and just do coding reviews. It is mistake to have a synchronous conversation with a machine!
This type of works needs severe automation and parallelisation.
wow - I thought it was called 'ideation' or 'brainstorming'. he didn't give it a 'spec', he started a conversation with it to see if 'something actionable comes up' - which you actually quoted, but didn't appear to read ?
No, I read it. Machine needs handholding because it makes spagheti code.
This can be easily automated away!
Capital. Owners. Hate. Labor.
You are a cog, an unfortunately necessary (currently) cost that needs to be reduced because you're decreasing profits.
This same thing has been a tension in Hollywood for many, many years. Studio execs hate creatives. They want to reduce everything they do to a formula that can be repeated en masse. It's why we get so many sequals and, most recently, so many reboots of existing properties. The real boon of streaming was that it allowed the studios to dismantle the residual system that kept people working in the industry.
You, as a software engineer, are not special. Your leadership hates you because they need you and every dollar you cost is a dollar taken from profits. It doesn't matter that you produce more value than you cost. They will still actively suppress your wages whenever they can. They will collude with other companies to do it. In the 2000s there was the hiring cartel with Apple, Google, etc. Since the pandemic, it's the ever-present layoffs that only exist to suppress wages and get more unpaid labor. People who are in fear of losing their job aren't asking for raises.
Vibe coding is just another effort to suppress engineering salaries. That's why it was created. That's why management likes it.
Management would use you as fertilizer if there was an uptick in the stock if they could get away with it.
Do you guys remember the cult of git or the containerization cult? Damn, I hate the advancement ;D
I also remember the NFT cult.
> So pure vibe coding is a myth. But they’re still trying to do it, and this leads to some very ridiculous outcomes
creating a product in a span of mere months that millions of developers use everday is opposite of ridiculous. we wouldn't even have known about the supposed ridiculousness of code if it hadnt leaked.
I suppose months is better than weeks. The world's still not recovered from the last such tech used by millions of developers.
what about the cult vibe projecting every business logic agentic?
> You don’t have to have poor quality software just because you’re using AI for coding.
People were given faster typers with incredible search capabilities and decided quality doesn’t matter anymore.
I don’t even mean the code. The product quality is noticeably sub par with so many vibe-coded projects.
Keep raging into the night, old guard.
I think the vibe-coding-deniers have move of a cult vibe, personally.
I think it is a 'cult' but also at the same time the inevitable future of engineering. The cult part are a subset of people who are not thinking about LLM code generation critically and blindly follow whatever trend is popular at this exact second.
The worst thing is that everyone but them knows how easy it is to take advantage of their blind hate. News companies, podcasts, and bloggers (such as this one) know they can just twist the thumbscrew and say "AI bad!" then rake in thousands of views/subs without even having to give a substantial argument.
AI is just another layer of abstraction. I'm sure the assembly language folks were grumbling about functions as being too abstracted at one point
High level languages that replaced assembly are not black boxes.
And they're as deterministic as as the underlying thing they're abstracting... which is kinda what makes an abstraction an abstraction.
I get that people love saying LLMs are just compilers from human language to $OUTPUT_FORMAT but... they simply are not except in a stretchy metaphorical sense.
That's only true if you reduce the definition of "compiler" to a narrow `f = In -> Out`. But that is _not_ a compiler. We have a word for that: function. And in LLM's case an impure one.
I totally see what you're saying, but to me this feels different. Compilation is a fairly mechanical and well understood process. The large language models aren't just compiling English to assembler via your chosen language, they try and guess what you want, they add extra bits you didn't ask for, they're doing some of your solution thinking for you. That feels like more than just abstraction to me.
I think it's still abstraction by definition, but you're right in that it's a much larger single leap than in the past.
> it's still abstraction by definition
I dislike arguing semantics but I bet it's not an abstraction by most engineers' definition of the word.
If this is true then a PMs jira tickets are an abstraction over an engineers code. It's not necessarily wrong by some interpretations but is not how the majority of engineers would define the word.
> AI is just another layer of abstraction.
A fundamentally unreliable one: even an AI system that is entirely correctly implemented as far as any human can see can yield wrong answers and nobody can tell why.
That’s not entirely the fault of the technology, as natural language just doesn’t make for reliable specs, especially in inexperienced hands, so in a sense we finally got the natural-language that some among our ancestors dreamed of and it turned out to be as unreliable as some others of our ancestors said all along.
It partly is the fault of the technology, however, because while you can level all the same complaints against a human programmer, a (motivated) human will generally be much better at learning from their mistakes than the current generation of LLM-based systems.
(This even if we ignore other issues, such as the fact that it leaves everybody entirely reliant on the continued support and willingness to transact of a handful of vendors in a market with a very high barrier to entry.)
AI is non-deterministic. Can it still be considered an abstraction over a deterministic layer?
The argument against this is that human coders are also non-deterministic, so does it really matter if it's a human or an AI agent producing the code – assuming the AI agent is capable of producing human-quality code or better?
I agree it's not a layer of abstraction in the traditional sense though. AI isn't an abstraction of existing code, it's a new way to produce code. It's an "abstraction layer" in the same way an IDE is is an abstraction layer.
> The argument against this is that human coders are also non-deterministic, so does it really matter if it's a human or an AI agent producing the code
Actually yes, because Humans can be held accountable for the code they produce
Holding humans accountable for code that LLMs produce would be entirely unreasonable
And no, shifting the full burden of responsibility to the human reviewing the LLM output is not reasonable either
Edit: I'm of the opinion that businesses are going to start trying to use LLMs as accountability sinks. It's no different than the driver who blames Google Maps when they drive into a river following its directions. Humans love to blame their tools.
It can loop and probabilistically converge to a set of standards verified against a standard set of eval inputs
That is abstraction of the implementation of the tool, not the output.
Producing outputs you don’t understand is novel
Higher level languages that abstract assembly code are deterministic. AI, on the other hand, is not.
You could say that about atomic bombs, too.