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OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

developers.openai.com

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Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#51

Post by sunaookami »

redsaber wrote: post #9

not available for Github Copilot pro(only in pro+, business and enterprise), I am really now feeling the era of subsidized AI is over.

With a 7.5x multiplier and even that is a promo!! Microsoft is insane! https://github.blog/changelog/2026-04-24-gpt-5-5-is-generall...

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#52

Post by MallocVoidstar »

bakugo wrote: post #40
czk wrote: post #14

API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.

Models don't know what their cutoff dates are unless told via a system prompt. The proper way to figure out the real cutoff date is to ask the model about things that did not exist or did not happen before the date in question. A few quick tests suggest 5.5's general knowledge cutoff is still around early 2025.

OpenAI does tell the model the current date via API, so it's odd for them not to also tell the model its cutoff

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#53

Post by redsocksfan45 »

swyx wrote: post #19
czk wrote: post #14

API page lists the knowledge cutoff as Dec 01, 2025 but when prompting the model it says June 2024. Knowledge cutoff: 2024-06 Current date: 2026-04-24 You are an AI assistant accessed via an API.

can u test it on say who won the 2024 US election

I thought that one specifically was placed in the default system prompts of basically all providers.

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#54

Post by ericpauley »

pixel_popping wrote: post #50
XCSme wrote: post #48

Earlier quoted context omitted.

I feel like the last 2-3 generations of models (after gpt-5.3-codex) didn't really improve much, just changed stuff around and making different tradeoffs.

I disagree, it improved enormously especially at staying consistent for long-tasks, I have a task running for 32 days (400M+ tokens) via Codex and that's only since gpt-5.4

Has that task accomplished anything yet?

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#55

Post by NicuCalcea »

hellohello2 wrote: post #25
NicuCalcea wrote: post #24

Earlier quoted context omitted.

> a lot of doctors are using ChatGPT both to search diagnosis and communicate with non-English speaking patients I think that's the problem. Who's going to claim responsibility when ChatGPT hallucinates or mistranslates a patient's diagnosis and they die? For OpenAI, this would at best be a PR nightmare, so that's why they have safeguards.

The doctor would be responsible. I had a choice better a doctor that used AI or not, I would much prefer one that did...

The doctor would be responsible for the accuracy of their translation tool, something they can't verify but you expect them to use?

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#56

Post by guilamu »

Just tested it on my homemade Wordpress+GravityForms benchmark and it's one of the worst model of the leaderboard performance wise and the worst value wise: https://github.com/guilamu/llms-wordpress-plugin-benchmark

I know it's only on a single benchmark, but I dont understand how it can be so bad...

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#58

Post by xp84 »

ericpauley wrote: post #54
pixel_popping wrote: post #50

Earlier quoted context omitted.

I disagree, it improved enormously especially at staying consistent for long-tasks, I have a task running for 32 days (400M+ tokens) via Codex and that's only since gpt-5.4

Has that task accomplished anything yet?

Too soon to tell, give it a billion tokens before we make up our minds

Re: OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

#59

Post by codemog »

ericpauley wrote: post #54
pixel_popping wrote: post #50

Earlier quoted context omitted.

I disagree, it improved enormously especially at staying consistent for long-tasks, I have a task running for 32 days (400M+ tokens) via Codex and that's only since gpt-5.4

Has that task accomplished anything yet?

I think the OP is in for a rude surprise when the task is “finished”.
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