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A recent experience with ChatGPT 5.5 Pro

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Re: A recent experience with ChatGPT 5.5 Pro

#391

I am a physics professor and often use Gemini to check my papers. It is a formidable tool: it was able to find a clerical error (a missing imaginary unit in a complex mathematical expression) I was not able to find for days, and it often underlines connections between concepts and ideas that I overlooked. However, it often makes conceptual errors that I can spot only because I have good knowledge of the topic I am di…

[deleted]

Re: A recent experience with ChatGPT 5.5 Pro

#392

Earlier quoted context omitted.

> Mostly I just nudge it along. "Did you think about X? What about Y? Let's test Z" Exactly - you need to constantly have your sceptics glasses on and you need to be exacting in terms of the structure you want things to follow. Having and enforcing "taste" is important and you need to be willing to spend time on that phase because the quality of the payoff entirely depends on it. I recently planned for a major refact…

So you have to know the answer and also be an expert in the problem domain?

I don't think you have to know the answer. If the person you replied to knew the answer, there wouldn't have been a big, lengthy discussion.

But yes, being an expert in the problem domain helps. Or at least knowing enough to know what the right questions are and what plausible answers look like.

I just had a similar situation where an hour or two of conversation turned into a five-minute robot coding task. The problem required a solution and the number of possible solutions is vast, but that list can be refined, and then once the course of action is set, sometimes the course itself isn't all that complicated.

Re: A recent experience with ChatGPT 5.5 Pro

#393
post #141

Earlier quoted context omitted.

I assume you're using the "regular" Pro version of Gemini 3.1 for the above, rather than the Deep Think mode, which is more comparable to GPT-5.5 Pro. To my knowledge, regular 3.1 Pro is a tier below and often makes mistakes. Moreover, there's no reason to believe the progress of LLMs, which couldn't reliably solve high-school math problems just 3–4 years ago, will stop anytime soon. You might want to track the progr…

> there's no reason to believe the progress of LLMs [...] will stop anytime soon Wrong. Every advancement has followed a s curve. Where we are on that curve is anyones guess. Or maybe "this time its different".

> Wrong.

Can you please edit out swipes/putdowns, as the guidelines ask (https://news.ycombinator.com/newsguidelines.html)? I'm sure you didn't intend it, but it comes across that way, and your comment would be just fine without that bit.

Edit: on closer look, it would be just fine without that bit and also without the snarky bit at the end. The rest is good.

Re: A recent experience with ChatGPT 5.5 Pro

#394

Earlier quoted context omitted.

Hmm, I don’t know, maybe the fact that 4.6, 4.7, 5.3, 5.4, 5.5, 3.0, 3.1 are all marginal improvements?

I think people's opinion of "marginal improvement" is based on their relative ability. A 2000 elo chess player is going to think the jump from 500 to 1000 is marginal. They're both floundering around not doing anything resembling common sense. A 1000 elo chess player is going to find the jump from 2000 to 2500 marginal. They're both playing far better moves for incomprehensible reasons, and the only reason you know t…

The correct way to estimate this is exactly what people do. Measure the distance between ChatGPT's best public model and state of the art, the best humans. And there is very little difference between those versions from that perspective. It is very far away from peak human performance, and not getting noticeably closer for over a year now. There's lots of progress, but if you're OpenAI/Anthropic/Google, exactly the wrong kind of progress: the difference between ChatGPT 5.5 and a 27B/4B model (you need to try Gemma4-26B-A4B, wtf, it runs acceptably on CPU) is now reduced to ELO 1501 vs ELO 1434, generously a 70 ELO point difference, down from over 400, data from Arena.ai.

(in fact I find that Qwen-35B-A3B and Gemma4-26B-A4B very rarely "know" the answer, and so use first principles thinking, or go out and look for the answer where GPT-5.4 does not and simply assumes it knows. Which leads to now, in some cases, the small models far outperforming the big ones. Huge context + training quality seem to be the determining factors now, and neither of those are the strengths of SOTA models. If this continues ...)

While I agree this is a training problem, it is not a solvable one. ML models learn from examples. This is even true for their newest tricks like GRPO. They cannot train against things humans don't yet know.

And that's great, but you're forever locked at the peak of what you can be taught in widely available courses (which they download without paying) (even that is best case scenario: it assumes your ability to distinguish bullshit from reality somehow becomes perfect during training, or even before). The only way to exceed peak human performance is to start experimenting with math, physics, chemistry, even humans, yourself. And that has, even for humans, a massively higher cost than learning from examples, or from a course.

The reason they don't go further is the worst possible reason: the cost. It requires a 100x increase in training expense. Think of it like this: to exceed SOTA in physics or chemistry, training the next version of ChatGPT requires a particle accelerator, and a chemistry laboratory. This cannot be bypassed. Oh and not just any particle accelerator, right? A better one than the best currently existing one. Same for Chemistry labs. Same for ... So 100x is conservative.

But without doing it, ML models (LLM or otherwise) are forever limited at the level an army of first year university students achieve, ON AVERAGE. Maybe they can make that 2nd or even 4th year, at the end of the curve. But that's the limit. Phd level is the level you have to come up with new discoveries, and that ... just isn't possible with current training, even at the end of the improvement curve.

And ... is there budget to increase training cost another 100x? No ... there isn't. Not even with this totally absurd level of investment there isn't. And if small models keep this up, there's no way the investment is even remotely worth it.

Re: A recent experience with ChatGPT 5.5 Pro

#395
post #354

Earlier quoted context omitted.

And the same can be said for AI exuberance. Yes, LLMs are a great technology. Yes, we will probably all use them all the time in 20 years. No, we don't know how we will use them (to generate cat memes or to cure cancer) in 20 years time. Especially for software developers it looks increasingly that after huge turmoil it's likely we will need +/- the same number of developers in the world.

> Especially for software developers it looks increasingly that after huge turmoil it's likely we will need +/- the same number of developers in the world. what exactly are you basing this opinion on? All I am seeing personally across multiple projects I am working on and other friends at other places is that downsizing is either begun or is planned (to exclude from here all the “public” layoffs we see on the news).…

The past couple of years have been chaotic and fearful. Hopefully that won't last forever.

If we can get a little stability, people will begin thinking less in terms of "how do we do the same thing cheaper" and more in terms of "how do we do new things."

Re: A recent experience with ChatGPT 5.5 Pro

#396

Earlier quoted context omitted.

I think people's opinion of "marginal improvement" is based on their relative ability. A 2000 elo chess player is going to think the jump from 500 to 1000 is marginal. They're both floundering around not doing anything resembling common sense. A 1000 elo chess player is going to find the jump from 2000 to 2500 marginal. They're both playing far better moves for incomprehensible reasons, and the only reason you know t…

2024-2025 was filled with huge improvements. 2025-2026 has not been, outside of open source. The idea that we’re at the point where it’s superseded our ability to tell just makes no sense. I’ll be happy if we can get to a point where I don’t have to tell Claude not to tail every bash command or make a job that writes throughout instead of once at the end. I’ll be happy if “continue this interaction naturally, you are…

> I think this is a pretty ridiculous take.

This falls in the category of swipes/name-calling in https://news.ycombinator.com/newsguidelines.html - can you please edit those out?

You're a good contributor - it's just all too easy for unintentional sharpness to downgrade the conversation, and when it's a good conversation like this one, that's especially regrettable.

Re: A recent experience with ChatGPT 5.5 Pro

#397

Earlier quoted context omitted.

> Especially for software developers it looks increasingly that after huge turmoil it's likely we will need +/- the same number of developers in the world. what exactly are you basing this opinion on? All I am seeing personally across multiple projects I am working on and other friends at other places is that downsizing is either begun or is planned (to exclude from here all the “public” layoffs we see on the news).…

The past couple of years have been chaotic and fearful. Hopefully that won't last forever. If we can get a little stability, people will begin thinking less in terms of "how do we do the same thing cheaper" and more in terms of "how do we do new things."

I love this optimism but I after a (too) long career I think that 3rd thing will win out - "how we do new things - but cheaper (or as cheap as possible)" there are sooooo many different articles that have been discussed here on HN that basically argue "coding has never been the bottleneck" which to me is the biggest lie SWEs are currently trying to tell themselves, I have been coding 30+ years now and coding has always been the bottleneck. hiring new developers has always been justified with "we have all this work that needs to be done and not enough people to get the work done." with llms in the fold, I am questioning how will these decisions be made in the future? perhaps in the most simplistic view:

1. run a bigger "agent army"

2. hire more people to control and guide the existing "agent army"

I think it'll be #1 and SWEs will be expected to do more work and work longer hours in the future (those that are able to keep their jobs). this is more pessimistic outlook than yours so I hope you are right more than I am :)

edit: just now on the HN front page: https://www.nytimes.com/2026/05/08/technology/meta-ai-employ...

Re: A recent experience with ChatGPT 5.5 Pro

#398

[flagged]

Can you please make your substantive points without fulminating, as the site guidelines request (https://news.ycombinator.com/newsguidelines.html)?

We're trying for curious conversation here, and you've clearly got something interesting to say, but when you put it this aggressively, curiosity gets fried (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...)

Re: A recent experience with ChatGPT 5.5 Pro

#399
> what should we do with this kind of content? Had the result been produced by a human mathematician, it would definitely have been publishable, so I think it would be wrong to describe it as AI slop. On the other hand, it seems pointless even to think about putting it in a journal, since it can be made freely available, and nobody needs “credit” for it (except that Isaac deserves plenty of credit for creating the framework on which ChatGPT could build). I understand that arXiv has a policy against accepting AI-written content, which makes good sense to me. So maybe there should be a different repository where AI-produced results can live. But various decisions would need to be made about how it was organized.

Interesting question, I guess a starting point is “moltbook”, but perhaps a better one is something like GitHub, where Lean proofs and preprints can go, and trending items can get boosted.

I also think that posting this stuff on x or bluesky has merit, but again the existing paradigm doesn’t quite work; perhaps you can create a completely separate identity for your agent (à la Moltbook) but I think you want some sort of reputational association with the human piloting the agent, at least for now. (Maybe eventually there are enough agents critically engaging with content so that “interesting” results get agent likes, and so we’ll-piloted agents stand on their own merit.)

Re: A recent experience with ChatGPT 5.5 Pro

#400

[flagged]

I don’t love the tone here, but I do think you get at a key question in mathematical philosophy. Mathematicians have engaged, vigorously, on this very philosophical question for centuries - is math discovered truth, or is it more akin to building an edifice where you first define the materials, then the structure, and see where it leads? There are lots of strong feelings on both sides. For instance: “God created the…

> Who hurt you bro?

Please don't respond to a bad comment by breaking the site guidelines yourself. That only makes things worse.

https://news.ycombinator.com/newsguidelines.html

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