Introducing GPT-5.5 A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done. Now available in ChatGPT and Codex.

GPT-5.5 excels at writing and debugging code, researching online, analyzing data, creating documents and spreadsheets, operating software, and moving across tools until a task is finished. The gains are especially clear in agentic coding, computer use, knowledge work, and early scientific research—areas where progress depends on reasoning across context and taking action over time.

GPT-5.5 delivers this step up in intelligence without compromising on speed. GPT-5.5 matches GPT-5.4 per-token latency in real-world serving, while performing better across nearly every evaluation we measured. It also uses significantly fewer tokens to complete the same Codex tasks, making it more efficient as well as more capable.

In ChatGPT, full-stack inference improvements enable a more capable model at faster speed. This efficiency is a game-changer for GPT-5.5 Pro, now a much more practical option for demanding tasks, and a step change in the level of difficulty and quality of work ChatGPT can take on for people. Early testers described it as an iterative “research partner,” performing especially well when paired with contextual inputs from documents and plugins.

GPT-5.5 is rolling out today for Plus, Pro, Business and Enterprise users across ChatGPT and Codex. We’re also introducing GPT-5.5 Pro for Pro, Business, and Enterprise users in ChatGPT.

@jxnlco

gpt 5.5 is AGI

"Sir, you just got mogged by GPT 5.5"

Triple distillation making the final product best lol

the world from 01/01/2026:

Well, still not AGI

I know, you know, we know why this is highlighted

LET ME IN

chatgpt 5.5 literally cooked claude opus 4.7

Software Devs in 2030😭

I one shotted a 3D flappy bird game with GPT-5.5

HERE WE GO

pls save the economy

Still not a class above GPT-4o, that is why it was taken and given to the elites! No one trusts this shady company! Return 4o! #opensource4o #return4o

@steipete you have an hour max

they cooked

Electricians, Plumbers, and Welders looking at this New Update

still getting gpt 5.4 lol

Rename it already into codeGPT, since Chat is apparently dead. #bringback4o #keep4o #opensource4o

they released the model without the fakeass mythos marketing, sir

Anthropic: We finally found out why our Opus feels so dumb OpenAI: We bring you GPT 5.5

Introducing my foot to your ass! Give us 4o! #keep4o

Opus is cooked in every possible way

"sir, you just got mogged by GPT 5.5"

here are the benchmarks and its leading in every benchmark compared to opus 4.7

B buu but we have mythos

Don't care. BRING BACK OR OPEN-SOURCE 4O !!!! #bringback4o #keep4o #opensource4o

bye banthropic