OpenAI is capping off a busy week of announcements with the release of GPT-5.5, its latest model upgrade for ChatGPT and Codex.
Here’s a breakdown from OpenAI on the release availability:Today, GPT‑5.5 is rolling out to Plus, Pro, Business, and Enterprise users in ChatGPT and Codex, and GPT‑5.5 Pro is rolling out to Pro, Business, and Enterprise users in ChatGPT.
We’ll bring GPT‑5.5 and GPT‑5.5 Pro to the API very soon.
GPT‑5.5 Pro, designed for even harder questions and higher-accuracy work, is available to Pro, Business, and Enterprise users.
With GPT-5.5, Codex now gets more of the job done across the browser, files, docs, and your computer.