GPT-5.5 • Hacker News Board

Re: GPT-5.5

#111

Post by phillipcarter » Thu, Apr 23, 2026, 6:49 PM UTC

... sigh. I realize there's little that can be done about this, but I just got through a real-world session determining of Opus 4.7 is meaningfully better than Opus 4.6 or GPT 5.4, and now there's another one to try things with. These benchmark results generally mean little to me in practice.

Anyways, still exciting to see more improvements.

Re: GPT-5.5

#112

Post by extr » Thu, Apr 23, 2026, 6:50 PM UTC

Seems like a continuation of the current meta where GPT models are better in GPT-like ways and Claude models are better in Claude-like ways, with the differences between each slightly narrowing with each generation. 5.5 is noticeably better to talk to, 4.7 is noticeably more precise. Etc etc.

Re: GPT-5.5

#113

Post by jorl17 » Thu, Apr 23, 2026, 6:50 PM UTC

steinvakt2 wrote: post #110

jorl17 wrote: post #23

Earlier quoted context omitted.

GPT 5.4 is already better than Opus 4.7 to me. But, then again, Opus 4.7 is a massive disappointment. I hope they don't discontinue 4.6.

I’ve had great experience using opus 4.7 in cursor. Works for everything including iOS frontend

Cursor is what I daily-drive. 4.7 has been terrible for my mostly python-driven work (whereas Opus 4.6 was literally revolutionary to me). Our frontend folks are also complaining.

I left a comment here with this sentiment https://news.ycombinator.com/item?id=47879896

Re: GPT-5.5

#114

Post by addaon » Thu, Apr 23, 2026, 6:51 PM UTC

endymi0n wrote: post #103

tedsanders wrote: post #19

Just as a heads up, even though GPT-5.5 is releasing today, the rollout in ChatGPT and Codex will be gradual over many hours so that we can make sure service remains stable for everyone (same as our previous launches). You may not see it right away, and if you don't, try again later in the day. We usually start with Pro/Enterprise accounts and then work our way down to Plus. We know it's slightly annoying to have to…

Did you guys do anything about GPT‘s motivation? I tried to use GPT-5.4 API (at xhigh) for my OpenClaw after the Anthropic Oauthgate, but I just couldn‘t drag it to do its job. I had the most hilarious dialogues along the lines of „You stopped, X would have been next.“ - „Yeah, I‘m sorry, I failed. I should have done X next.“ - „Well, how about you just do it?“ - „Yep, I really should have done it now.“ - “Do X, righ…

Isn’t this the optimal behavior assuming that at times the service is compute-limited and that you’re paying less per token (flat fee subscription?) than some other customers? They would be strongly motivated to turn a knob to minimize tokens allocated to you to allow them to be allocated to more valuable customers.

Re: GPT-5.5

#115

Post by debba » Thu, Apr 23, 2026, 6:51 PM UTC

Cannot see it in Codex CLI

Re: GPT-5.5

#116

Post by [deleted] » Thu, Apr 23, 2026, 6:51 PM UTC

[deleted]

Re: GPT-5.5

#117

Post by NitpickLawyer » Thu, Apr 23, 2026, 6:53 PM UTC

> Across all three evals, GPT‑5.5 improves on GPT‑5.4’s scores while using fewer tokens.

Yeah, this was the next step. Have RLVR make the model good. Next iteration start penalising long + correct and reward short + correct.

> CyberGym 81.8%

Mythos was self reported at 83.1% ... So not far. Also it seems they're going the same route with verification. We're entering the era where SotA will only be available after KYC, it seems.

Re: GPT-5.5

#118

Post by wmf » Thu, Apr 23, 2026, 6:53 PM UTC

impulser_ wrote: post #21

What is the reason behind OpenAI being able to release new models very fast? Since Feb when we got Gemini 3.1, Opus 4.6, and GPT-5.3-Codex we have seen GPT-5.4 and GPT-5.5 but only Opus 4.7 and no new Gemini model. Both of these are pretty decent improvements.

I wonder if it's the same model and they just keep adding more post-training.

Re: GPT-5.5

#119

Post by benjiro3000 » Thu, Apr 23, 2026, 6:53 PM UTC

jorl17 wrote: post #23

YmiYugy wrote: post #20

So according to the benchmarks somewhere in between Opus 4.7 and Mythos

GPT 5.4 is already better than Opus 4.7 to me. But, then again, Opus 4.7 is a massive disappointment. I hope they don't discontinue 4.6.

[dead]

Re: GPT-5.5

#120

Post by endymi0n » Thu, Apr 23, 2026, 6:54 PM UTC

addaon wrote: post #114

endymi0n wrote: post #103

Earlier quoted context omitted.

Did you guys do anything about GPT‘s motivation? I tried to use GPT-5.4 API (at xhigh) for my OpenClaw after the Anthropic Oauthgate, but I just couldn‘t drag it to do its job. I had the most hilarious dialogues along the lines of „You stopped, X would have been next.“ - „Yeah, I‘m sorry, I failed. I should have done X next.“ - „Well, how about you just do it?“ - „Yep, I really should have done it now.“ - “Do X, righ…

Isn’t this the optimal behavior assuming that at times the service is compute-limited and that you’re paying less per token (flat fee subscription?) than some other customers? They would be strongly motivated to turn a knob to minimize tokens allocated to you to allow them to be allocated to more valuable customers.

well, I do understand the core motivation, but if the system prompt literally says “I am not budget constrained. Spend tokens liberally, think hardest, be proactive, never be lazy.” and I’m on an open pay-per-token plan on the API, that’s not what I consider optimal behavior, even in a business sense.