If you haven’t tried it, I can’t recommend it enough. It’s the first time it really does feel like working with a junior engineer to me.
And I reach for Claude quite a bit because if it worked as well for me like everyone here says, that would be amazing.
But at best it’ll get a bunch of boilerplate done after some manual debugging, at worst I spend an hour and some amount of tokens on a total dead end
Clear instructions go a long way, asking it to review work, asking it to debug problems, etc. definitely helps.
Definitely - with ONE pretty big callout. This only works when a clear and quantifiable rubric for verification can be expressed. Case in point, I put Claude Code to work on a simple react website that needed a "Refresh button" and walked away. When I came back, the button was there, and it had used a combination of MCP playwright + screenshots to roughly verify it was working.
The problem was that it decided to "draw" a circular arrow refresh icon and the arrow at the end of the semicircle was facing towards the circle centroid. Anyone (even a layman) would take one look at it and realize it looked ridiculous, but Claude couldn't tell even when I took the time to manually paste a screenshot asking if it saw any issues.
While it would also be unreasonable to expect a junior engineer to hand-write the coordinates for a refresh icon in SVG - they would never even attempt to do that in the first place realizing it would be far simpler to find one from Lucide, Font Awesome, emojis, etc.
But for other tasks like generating reports, I ask it to write little tools to reformat data with a schema definition, perform calculations, or do other things that are fairly easy to then double-check with tests that produce errors that it can work with. Having it "do math in its head" is just begging for disaster. But, it can easily write a tool to do it correctly.
That's exactly what I learned. In the early 2000's, from three expensive failed development outsourcing projects.
When it drops in something hacky, I use that to verify the functionality is correct and then prompt a refactor to make it follow better conventions.
btw, I'm not throwing shade. I personally think upfront design through a large lumbering document is actually a good way to develop stuff. As you either do it upfront, or through endless iterations in sprints for years.
So, is Claude just something you use for fun? Would you use it for work?
I'd definitely watch Boris's intro video below [1]
[1] Boris introduction: https://www.youtube.com/watch?v=6eBSHbLKuN0 [2] summary of above video: https://www.nibzard.com/claude-code/
Yes, I would write a 4 line bash script by myself.
But if you're trading a 200 line comprehensive claude.md document for a module that might be 20k LoC? it's a different value proposition.
The spec and the test are your human contribution.
To have useful tests, you must write the APIs for the functions, and give examples of how to wire up the various constructs, and correct input/output pairs.
Implementations of those functions that pass the test now have significant constraints that mean you understand a lot about it.
First you write the tests, then you write code until tests pass.
As for coworkers, I would really try to get them to work in chunks smaller than 20k loc. But at some point you have an expectation that coworkers will be accountable for their area of responsibility. If there's a bug in their code, they're expected to fix it. If there's a bug in the AIs code, I'm expected to fix it....
Those are cool, but a production system is infinitely more complex.
I sympathize with both experiences and have had both. But I think we've reached the point where such posts (both positive and negative) are _completely useless_, unless they're accompanied with a careful summary of at least:
* what kind of codebase you were working on (language, tech stack, business domain, size, age, level of cleanliness, number of contributors)
* what exactly you were trying to do
* how much experience you have with the AI tool
* is your tool set up so it can get a feedback loop from changes, e.g. by running tests
* how much prompting did you give it; do you have CLAUDE.me files in your codebase
and so on.
As others pointed out, TFA also has the problem of not being specific about most of this.
We are still learning as an industry how to use these tools best. Yes, we know they work really well for some people and others have bad experiences. Let's try and move the discussion beyond that!
For context, I was using Claude Code on a Ruby + Typescript large open source codebase. 50M+ tokens. They had specs and e2e tests so yeah I did have feedback when I was done with a feature - I could run specs and Claude Code could form a loop. I would usually advise it to fix specs one by one. --fail-fast to find errors fast.
Prior to Claude Code, I have been using Cursor for an year or so.
Sonnet is particularly good at NextJS and Typescript stuff. I also ran this on a medium sized Python codebase and some ML related work too (ranging from langchain to Pytorch lol)
I don't do a lot of prompting, just enough to describe my problem clearly. I try my best to identify the relevant context or direct the model to find it fast.
I made new claude.md files.
I also do a fair amount of data shuffling with Golang. My LLM experience there is "mixed".
Then I deal with quite a few "fringe" code bases and problem spaces. There LLM's fall flat past the stuff that is boiler plate.
"I work in construction and use a hammer" could mean framer, roofer or smashing out concrete with a sledge. I suspect that "I am a developer, I write code" plays out in much the same way, and those details dictate experience.
Just based on the volume of ruby and typescript, and the overlap of the output of these platforms your experience is going to be pretty good. I would be curious if you went and did something less mainstream, and in a less common language (say Zig) if you would have the same feelings and feedback that you do now. Based on my own experience I suspect you would not.
Which is, obviously, sad. Especially since the big winner is Javascript, a language that's still subpar as far as programming languages go.
Your LLM (CC) doesn't have your whole codebase in context, so it can run off and make changes without considering that some remote area of the codebase are (subtly?) depending on the part that claude just changed. This can be mitigated to some degree depending on the language and tests in place.
The LLM (CC) might identify a bug in the codebase, fix it, and then figure, "Well, my work here is done." and just leave it as is without considering ramifications or that the same sort of bug might be found elsewhere.
I could go on, but my point is to simply validate the issues people will be having, while also acknowledging those seeing the value of an LLM like CC. It does provides useful work (e.g. large tedious refactors, prototyping, tracking down a variety of bugs, and so on...).
If your tests are good, Claude Code can run them and use them to check it hasn't broken any distant existing behavior.
If they DO do that, it's on us to tell them to undo that and fix things properly.
Then it doesn’t need to feel (or rg) through the whole codebase.
You also use plan mode to figure out the issue, write the implementation plan in a .md file. Clear context, enter act mode and tell it to follow the plan.
I actually think it's more productive to just accept how people describe their experience, without demanding some extensive list of evidence to back it up. We don't do this for any other opinion, so why does it matter in this case?
> Let's try and move the discussion beyond that!
Sharing experiences using anecdotal evidence covers most of the discussion on forums. Maybe don't try to police it, and either engage with it, or move on.
The thing is that I often read this kind of response only to comments with negative experiences, while positive ones are accepted as fact. You can see this reinforced in the comments here as well. A comment section is not the right place to expand on these details, but I agree that blog posts should have them, regardless of the experience type.
Sort of.
The people that are happy with it and praising the avenues offered by LLM/AI solutions are creating codebases that fulfill their requirements, whatever those might be.
The people that seem to be unhappy with it tend to have the universal complaints of either "it produces garbage" , or "I'm slower with it.".
Maybe i'm showing my age here, but I remember these same exact discussions between people that either praised or disparaged search engines. The alternative being an internet Yellowpages (which was a thing for many years.)
The ones that praised it tended to be people who were taught or otherwise figured out how to use metadata tags like date:/onsite: , whereas the ones that disparaged it tended to be the folks who would search for things like "who won the game" and then proceed to click every scam/porno link on this green Earth and then blame Google/gdg/lycos/whatever when they were exposed to whatever they clicked.
in other words : proof is kind of in the pudding.
I wouldn't care about the compiler logs from a user that ignored all syntax and grammar rules of a language after picking it up last week, either -- but it's useful for successful devs to share their experiences both good and bad.
I care more about the opinions of those that know the rules of the game -- let the actual teams behind these software deal with the user testing and feedback from people that don't want to learn conventions.
One big warning here: search engines only became really useful when you could search for "who won the game" and the search engine actually returned the correct thing as the top result.
We're more than a quarter of a century later and probably 99.99% of users don't know about Google's advanced search operators.
This should be a major warning for LLMs. People are people and will do people things.
Ah, but "whatever those might be" is the crucial bit.
I don't entirely disagree with what you're saying. There will always be a segment of power users who are able to leverage their knowledge about these tools to extract more value out of them than people who don't use them to their full potential. That is true for any tool, not just in software.
What you're ignoring are two other possibilities:
1. The expectation of users can be wildly different. Someone who has never programmed before, but can now create and ship a smartphone app, will see these tools as magical. Whatever issues they have will either go unnoticed, or won't matter considering the big picture. Surely their impression of AI tooling will be nothing short of positive. They might be experts at using LLMs, but not at programming.
OTOH, someone who has been programming for decades, and strives for a certain level of quality in their work, will find the experience much different. They will be able to see the flaws and limitations of these tools, and addressing them will take time and effort that they could've better spent elsewhere. As we've known since the introduction of LLMs, domain experts are the only ones who can experience these problems.
So the experience of both sides is valid, and should have equal weight in conversations. Unlike you, I do trust the opinion of domain experts over those of user experts, but that's a personal bias.
2. There are actual flaws and limitations in AI tooling. The assumption that all negative experiences are from users who are "holding it wrong", while all positive ones are from expert users, is wrong. It steers the conversation away from issues with the tech that should be discussed and addressed. And considering the industry is strongly propelled by hype and marketing right now, we need conversations grounded in reality to push back against it.
I’m not sure about that. I feel like someone experienced would realize when using the LLM is a better idea than doing it themselves, and when they just need to do it by hand.
You might work in a situation where you have to do everything by hand, but then your response would be to the extent that you can see how it’s useful to other people.
They did mention "(both positive and negative)", and I didn't take their comment to be one-sided towards the AI-negative comments only.
"I prefer typewriters over word processors because it's easier to correct mistakes."
"I don't own any forks because knives are just better at cutting bread."
"Bidets make my pants wet, so I'll keep to toilet paper."
I think there's an urge to fix misinformation. Whereas if someone loves Excel and thinks Excel is better than Java at making apps, I have no urge to correct that. Maybe they know something about Excel that I don't.
I use Claude many times a day, I ask it and Gemini to generate code most days. Yet I fall into the "I've never included a line of code generated by an LLM in committed code" category. I haven't got a precise answer for why that is so. All I can come up with is the code generated lacks the depth of insight needed to write a succinct, fast, clear solution to the problem someone can easily understand in in 2 years time.
Perhaps the best illustration of this is someone proudly proclaimed to be they committed 25k lines in a week, with the help of AI. In my world, this sounds like they are claiming they have a way of turning the sea into ginger beer. Gaining the depth of knowledge required to change 25k lines of well written code would take me more than a week of reading. Writing that much in a week is a fantasy. So I asked them to show me the diff.
To my surprise, a quick scan of the diff revealed what the change did. It took me about 15 minutes to understand most of it. That's the good news.
The bad news it that 25k lines added 6 fields to a database. 2/3's were unit tests, perhaps 2/3's of the remainder was comments (maybe more). The comments were glorious in their length and precision, littered with ASCII art tables showing many rows in the table.
Comments in particular are a delicate art. They are rarely maintained, so they can bit rot in downright misleading babble after a few changes. But the insight they provide into what author was thinking, and in particular the invariants he had in mind can save hours of divining it from the code. Ideally they concisely explain only the obscure bits you can't easily see from the code itself. Anything more becomes technical debt.
Quoting Woodrow Wilson on the amount of time he spent preparing speeches:
“That depends on the length of the speech,” answered the President. “If it is a ten-minute speech it takes me all of two weeks to prepare it; if it is a half-hour speech it takes me a week; if I can talk as long as I want to it requires no preparation at all. I am ready now.”
I used PayPal's KYC web interface the other day. It looked beautiful, completely inline with the rest of PayPal's styling. But sadly I could not complete it because of bugs. The server refused to accept one page, it just returned to the same page with no error messages. No biggie, I phoned support (several times, because they also could not get past the same bug), and after 4 hours on the phone the job was done. I'm sure the bug will be fixed a new contractor. He spend an few hours on it, getting an LLM to write a new version, throwing the old code away, just as his predecessor did. He will say the LLM provided a huge productivity boost, and PayPal will be happy because he cost them so little. It will be the ideal application for an LLM - got the job done quickly, and no one will read the code again.
I later discovered there was a link on the page that allowed me to skip past the problematic page, so I could at least enter the rest of the information. It was in a thing that looked confusingly like a "menu bar" on the left, although there was no visual hit any of the items in the menu were clickable. I clicked on most of them anyway, but they did nothing. While on hold for phone support, I started reading the HTML and found one was a link. It was a bit embarrassing to admit to the help person I hadn't clicked that one. It sped the process up somewhat. As I said, the page did look very nice to the eye, probably partially because of the lack of clutter created by visual hints on what was clickable.
[0] https://quoteinvestigator.com/2012/04/28/shorter-letter/
- Some believe LLMs will be a winner-take-all market and reinforce divergences in economic and political power.
- Some believe LLMs have no path of evolution and have therefore already plateaued and too low to be sustainable with these investments in compute, which would imply it's a flash in the pan that will collapse.
- Some believe LLMs will all be hosted forever, always living in remote services because the hardware requirements will always be massive.
- Some believe LLMs will create new, worse kinds of harm without enough offsetting creation of new kinds of defense.
- Some believe LLMs and AI will only ever give low-skilled people mid-skill results and therefore work against high-skill people by diluting mid-end value without creating new high-end value for them.
We need to be more aware of how we are framing this conversation because not everyone agrees on these big premises. It very strongly affects the views that depend on them. When we don't talk about these points and just judge and reply based on whether the conclusion reinforces our premises, the conversation becomes more political.
Confirmation bias is a thing. Individual interests are a thing. Some of the outcomes, like regulation and job disruption, depend on what we generally believe. People know this and so begin replying and voting according to their interests, to convince others to aid their cause without respect for the truth. This can be counter-productive to the individual if they are wrong about the premises and end up pushing an agenda that doesn't even actually benefit them.
We can't tell people not to advance their chosen horse at every turn of a conversation, but those of us who actually care about the truth of the conversation can take some time to consider the foundations of the argument and remind ourselves to explore that and bring it to the surface.
I just wish I could figure out what it tells. Their training data can't be that different. The problems I'm feeding them are the same. Many people think Claude is the more capable of the two.
It has to be how I'm presenting the problems, right? What other variable is there?
I'm on board with some limited AI autocompletion, but so far agents just seem like gimmicks to me.
Although I should be fair, this can help with one-off scripts that research folks usually do, when you just need to plot some data or do some back-of-the-terminal math. That said I don't think this would be a game changer, more of an efficiency boost and a limited one at that.
As to the shovelware, if it benefits people that's great, and I think the net benefit will likely be positive, but only slightly. The point in calling it shovelware is to suggest that it's low quality, and so it could have bugs and other performance issues that add costs to using which subtract from the benefit it provides (possibly in a net positive way, but probably not as fundamentally game changing as, say, Docker).
When it creates a bunch of useless junk I feel free to discard it and either try again with clearer guidelines (or switch to Opus).
It would have been a half-day worth of adventure at least should i have done it myself (from diagnosing to fixing)
This seems consistent with some of the more precocious junior engineers I've worked with (and have been, in the past.)
The quality of the generated code is inversely proportional to the time it take to generate it. If you let Claude Code work alone for more than 300 seconds you will receive garbage code. Take that as a hint, if it can't finish the task in this time it means you are asking too much. Break up your feature and try with a smaller feature.
Much less context babysitting too. Claude code is really good at finding the things it needs and adding them to its context. I find Cursor’s agent mode ceases to be useful at a task time horizon of 3-5 minutes but Claude Code can chug away for 10+ minutes and make meaningful progress without getting stuck in loops.
Again, all very surprising given that I use sonnet 4 w/ cursor + sometimes Gemini 2.5 pro. Claude Code is just so good with tools and not getting stuck.
I have mixed feelings; because this means there’s really no business reason to ever hire a junior; but it also (I think) threatens the stability of senior level jobs long term, especially as seniors slowly lose their knowledge and let Claude take care of things. The result is basically: When did you get into this field, by year?
I’m actually almost afraid I need to start crunching Leetcode, learning other languages, and then apply to DoD-like jobs where Claude Code (or other code security concerns) mean they need actual honest programmers without assistance.
However, the future is never certain, and nothing is ever inevitable.
aren't these people your seniors in the coming years? Its healthy to model an inflow and outflow.
I keep being told that $(WHATEVER MODEL) is the greatest thing ever, but every time I actually try to use them they're of limited (but admittedly non-zero) usefulness. There's only so many breathless blogs or comments I can read that just don't mesh with the reality I personally see.
Maybe it's sector? I generally work on Systems/OS/Drivers, large code bases in languages like C, C++ and Rust. Most larger than context windows even before you look at things like API documentation. Even as a "search and summarizer" tool I've found it completely wrong in enough cases to be functionally worthless as the time required to correct and check the output isn't a saving. But they can be handy for "autocompletion+" - like "here's a similar existing block of code, now do the same but with (changes)".
They generally seem pretty good at being like a template engine on non-templated code, so thing like renaming/refactoring or similar structure recognition can be handy. Which I suspect might also explain some of those breathless blog posts - I've seen loads which say "Any non-coder can make a simple app in seconds!" - but you could already do that, there's a million "Simple App Tutorial" codebases that would match whatever license you want, copy one, change the name at the top and you're 99% of the way to the "Wow Magic End Result!" often described.
Then they'll just get a contract to spin up a DoD-secure variant: https://www.anthropic.com/news/anthropic-and-the-department-...
People have such widely varying experiences and I’m wondering why.
I'd think Win32 development would be something AIs are very strong at because it's so old, so well documented, and there's a ton of code out there for it to read. Yet it still struggles with the differences between Windows messages, control notification messages, and command messages.
It's also another in my growing list of data points towards my opinion that if an author posts meme pictures in their article, it's probably not an article I'm interested in reading.
The tools really do shine where they're good though. They're amazing. But the moment you try to do the more "serious" work with them, it falls apart rapidly.
I say this as someone that uses the tools every day. The only explanation that makes sense to me is that the "you don't get it, they're amazing at everything" people just aren't working on anything even remotely complicated. Or it's confirmation bias that they're only remembering the good results - as we saw with last week's study on the impact of these tools on open source development (perceived productivity was up, real productivity was down). Until we start seeing examples to the contrary, IMO it's not worth thinking that much about. Use them at what they're good at, don't use them for other tasks.
LLMs don't have to be "all or nothing". They absolutely are not good at everything, but that doesn't mean they aren't good at anything.
But I think we should expect the scope of LLM work to improve rapidly in the next few years.
https://metr.org/blog/2025-03-19-measuring-ai-ability-to-com...
Sorry, but this is just not true.
I'm using agents with a totally idiosyncratic code base of Haskell + Bazel + Flutter. It's a stack that is so quirky and niche that even Google hasn't been able to make it work well despite all their developer talent and years of SWEs pushing for things like Haskell support internally.
With agents I'm easily 100x more productive than I would be otherwise.
I'm just starting on a C++ project, but I've already done at least 2 weeks worth of work in under a day.
If you honestly believe that "agents" are making you better than Goole SWEs then you severely need to take a step back and reevaluate, because you are wrong.
If you’re really that more productive, why don’t you quit your job and vibecode 10 ios apps (in your case that would be 50 to 100 proportionally)
This doesn't mean that it's not useful, or that you shouldn't be happy with what the LLM built. I also had Claude Code build me a web app for my own personal use in Rust this week. It's very useful to me. But it is 100% of POC/MVP quality, and always will be, because the code that it created is abjectly awful and I would never be able to scale it into a real world service without rewriting 50+% of it.
It’s nice because 3/4 of those are well-known but not “default” industry choices and it still handles them very well.
So there’s a Laravel CRM builder called Filament which is really fun to work in. Claude does a great job with that. It’s a tremendous amount of boilerplate with clear documentation, so it makes sense that Claude would do well.
The thing I appreciate though is that CC as an agent is able to do a lot in one go.
I’ve also hooked CC up to a read-only API for a client, and I need to consume all of the data on that API for the transition to a Filament app. Claude is currently determining the schema, replicating it in Laravel, and doing a full pull of API records into Laravel models, all on its own. It’s been running for 10 minutes with no interruption and I expect will perform flawlessly at that.
I invest a lot of energy in prompt preparation. My prompts are usually about 200 words for a feature, and I’ll go back and forth with an LLM to make sure it thinks it’s clear enough.
In my experience, LLMs are great at small tasks (bash or python scripts); good at simple CRUD stuff (js, ts, html, css, python); good at prototyping; good at documentation; okay at writing unit tests; okay at adding simple features in more complex databases;
Anything more complex and I find it pretty much unusable, even with Claude 4. More complex C++ codebases; more niche libraries; ML, CV, more mathsy domains that require reasoning.
Not to dog the author too hard, but a look at their Github profile says a lot about the projects they've worked on and what kind of dev they are. Not much there in terms of projects or code output, but they do have 15k followers on Twitter, where they post frequently about LLMs to their audience.
They aren't talking about the tasks and the domains they're using because that's incidental; what they really want to do is just talk about LLMs to their online audience, not ship code.
E.g. I asked it to swap all on change handlers in a component to modify a use State rather than directly fire a network request, and then add on blurs for the actual network request. It didn't add use states and just added on blurs that sent network requests to the wrong endpoint. Bizarre.
I feel like working with Claude is what it must feel like for my boss to work with me. “Look, I did this awesome thing!”
“But it’s not what I asked for…”
But the other day I asked it to help add boundary logging to another legacy codebase and it produced some horrible, duplicated and redundant code. I see these huge Claude instruction files people share on social media, and I have to wonder...
Not sure if they're rationing "the smarts" or performance is highly variable.
There are some things in there that really take this from an average tool to something great. For example, a lot of people have no idea that it recognizes different levels of reasoning and allocates a bigger number of “thinking tokens” depending on what you ask (including using “ultrathink” to max out the thinking budget).
I honestly think that people who STILL get mostly garbage outputs just aren’t using it correctly.
Not to mention the fact that people often don't use Opus 4 and stay with Sonnet to save money.
I agree. It reminds me of this one junior engineer I worked with who produced awful code, and it would take longer to explain stuff to him than to just do it myself, let alone all the extra time I had to spend reviewing his awful PRs. I had hoped he would improve over time, but he took my PR comments personally and refused to keep working with me. At least Claude doesn't have an attitude.
If you want to try something better than claude code, try Cline.
My own experiments only show that this technology is unreliable.
If Claude is so amazing, could Anthropic not make their own fully-featured yet super-performant IDE in like a week?