GPT-5.5
GPT-5.5 and GPT-5.5 Pro are now available in the API, rolling out to Plus, Pro, Business, and Enterprise users in ChatGPT and Codex. Terminal-Bench 2.0 hits 82.7%, GDPval 84.9%, OSWorld-Verified 78.7%, and Tau2-bench Telecom 98.0% without prompt tuning.
The call on this one
What shipped is free. The call on it, what to do about it and the condition on that, opens with a signup: free, no card, every edition in full.
It becomes $50 a year, and signing up now keeps your first year free.