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The last six months in LLMs in five minutes

simonwillison.net

421–430 of 631 posts

Re: The last six months in LLMs in five minutes

#421

I wonder how much the 'inflection point' is a thing vs marketing. I'm sure the models got somewhat better, but even now when I'm trying to 'vibe code' a game with the latest models (combination of Codex w/ gpt5.5 and gpt5.3-codex), they really do struggle. They definitely get something barebones up and running, but it's far from a fully fledged application.

I've "vibed" some non-trivial stuff lately using a combination of Codex with 5.5 and Claude Code with Opus 4.7. Key has been to spend a fair amount of time on initial overall design document, which is split into tangible and limited phases. I go back and forth between them on this document until we're all happy. For each phase an implementation plan is made. At the end, a summary document of what was delivered and wh…

[flagged]

Re: The last six months in LLMs in five minutes

#423

Earlier quoted context omitted.

I don't really see your point. Most problems that people have aren't really super-novel, but just extremely bespoke. To give a specific example, 12 months ago I had a client pay me me to make a Chrome plugin that changed the rows in his Shopify Products page to display Quantity and SKU. These days you'd just one-shot it in Claude.

First of all it just underlines how shitty the web has become, second If that's your work I'd chase a career path where Claude can't one-shot this kind of dumb stuff

Thats quite a surprisingly arrogant take.

CRUD applications and converting business requirements into code is the thing software developers do to 99% day in day out.

Re: The last six months in LLMs in five minutes

#424

> The coding agents got really good It's since november 2025, the so called "inflection point", that I'm still wondering for who coding agents become "really good". All I observe they got better at tool call and answering questions about big codebases, especially if the question has a vague pattern to search, and they're superuseful for that! For generating production code even with a lot of steering and baby sitting…

I had a really fun day yesterday because anthropics limits on their normal 20$ subscription allowed me to play around for the whole day without hitting a limit. Its 'production' code because its a small browser game which has very small to 0 requirements on security and being perfect but high requirements on 'ever even doing this' and 'fun'. The code it generated hat 0 compiletime errors. I was able to descripe 10 th…

I don’t see how “fun projects” and “take our jobs” fit together in any voluntary sentence.

Re: The last six months in LLMs in five minutes

#425
post #407

Earlier quoted context omitted.

I had a really fun day yesterday because anthropics limits on their normal 20$ subscription allowed me to play around for the whole day without hitting a limit. Its 'production' code because its a small browser game which has very small to 0 requirements on security and being perfect but high requirements on 'ever even doing this' and 'fun'. The code it generated hat 0 compiletime errors. I was able to descripe 10 th…

"We could already be at 95% at 'ai will take your coding job' without knowing because these 5% are so relevant." This is nonsense. Im not a SWE but a CEO, if that were true I'd be firing without a hitch. And yet this is not the activity we see. Why is that? Perhaps merely writing code is not the entire job.

I wrote coding job. And its true for coding jobs.

Your Product Manager is not a coding job. Your Product Owner is not a coding job.

vibe-kanban exists you could already do a proper experiment letting your PO maintain a vibe-kanban board with proper requirements and see how an agent progresses.

But 5% is often enough wwhat breaks it. Doesn't help much when your PM, PO or CEO or CTO have no clue about coding harnesses, coding agents, coding platforms, LLMs etc.

Re: The last six months in LLMs in five minutes

#426

Earlier quoted context omitted.

Deeply troubling for so many reasons. Please try to get her to stop.

What's the problem? If I enjoy some show, material or text, if it brings me value or a brief moment of happiness, I could care less if it was made by an AI or a human. This racism against AI-generated stuff has to stop. If not, we'll have a butlerian jihad on our hands that will set back prosperity, development and science for decades, perhaps centuries. People mention the artists... ohh, boohoo... either do it on yo…

Is this a parody?

Re: The last six months in LLMs in five minutes

#427

Earlier quoted context omitted.

> I did not much more than a cursory glance too, but found "./sandbox/create.go", a ~1300 lines long file with so much duplication even within just itself that I stopped counting. Really? What duplication did you actually find? I count a few small ones in buildMounts and ReadPrompt, maybe 20 lines or so, but hardly anything worthy of such an epithet. Admittedly, the parsing & escaping code and some utility functions…

The duplication I'm seeing isn't just "same text repeated" but structural duplication. Doing a quick 5 minute look again just to give you some pointers; runtime.MountSpec construction in buildMounts, Workdir vs aux-dir mount-mode handling, repeated one-off mount append blocks, overlay detection and so on, the list goes on. Just those should account for 200+ lines. Look for slight variations of the same thing but with…

You consider adding in-place constructed items to an array to be code duplication?

Re: The last six months in LLMs in five minutes

#428

Earlier quoted context omitted.

Nice, very retro (looking at the codex one)! Claude one doesn't really work (collision detection was the problem I had before too), but fairly close. Yes when I tried previously I had a few gameplay issues in frogger and I couldn't manage to one-shot this sort of thing at the time (a year ago), so last year definitely saw some good progress at this sort of thing. The asteroids game I was very happy with though, had a…

To your point, I didn't even look at the code.. :) Okay, I looked at the codex code. it's super reasonable -- separation of concerns, operating on a state model, it's not over designed. I did not hate it. I also noted that codex put in a CRT simulator loop which is a nice touch. I think a year ago this would have taken a lot of back and forth and arguing; to me that's kind of the point of Simon's article -- a lot mor…

Sorry I meant the code a year ago - it took a bit more hand-holding at that point and it was a mishmash of different things, but I feel it’s just slightly easier now - still similar. Haven’t looked into this one just had a quick play. Thanks for trying it out!

I think his article is for the last 6 months - my feeling is progress with LLMs has stalled recently and generated code still has problems with accuracy and coherence and subtle bugs, but everyone has a different experience.

Re: The last six months in LLMs in five minutes

#429

> The coding agents got really good It's since november 2025, the so called "inflection point", that I'm still wondering for who coding agents become "really good". All I observe they got better at tool call and answering questions about big codebases, especially if the question has a vague pattern to search, and they're superuseful for that! For generating production code even with a lot of steering and baby sitting…

The polarization comes from the very disparate coding experiences and output quality that different people find when using these tools. For example, I've had the opposite experience of yours, generating very high quality work using Claude (such as https://github.com/kstenerud/yoloai ). Just in dealing with all the bugs and idiosyncrasies in the technologies I'm using, the agent has been a godsend in discovering and c…

not going to look at your vibeslop

Re: The last six months in LLMs in five minutes

#430
post #407

Earlier quoted context omitted.

"We could already be at 95% at 'ai will take your coding job' without knowing because these 5% are so relevant." This is nonsense. Im not a SWE but a CEO, if that were true I'd be firing without a hitch. And yet this is not the activity we see. Why is that? Perhaps merely writing code is not the entire job.

I wrote coding job. And its true for coding jobs. Your Product Manager is not a coding job. Your Product Owner is not a coding job. vibe-kanban exists you could already do a proper experiment letting your PO maintain a vibe-kanban board with proper requirements and see how an agent progresses. But 5% is often enough wwhat breaks it. Doesn't help much when your PM, PO or CEO or CTO have no clue about coding harnesses,…

I dont have PMs or POs in my firm fella.

Im hyper efficient. You clearly are not and are full of it.

If youre only doing 5%, you should only get paid for that. lol. Are you happy to take a salary drop?

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