GPT-5.5

Figure OpenAI published with the GPT-5.5 post
GPT-5.5 Is in ChatGPT, Codex, and the API, With a Pro Tier Beside It
AI
OpenAI introduced GPT-5.5 on April 23, 2026, with a Pro tier beside it, in ChatGPT, Codex, and the API. A look at what it means for coding at a maker's bench.