GPT-5.6 Is Out: OpenAI Rolls Out Sol, Terra, Luna, ChatGPT Work, and Codex in ChatGPT

Updated July 9, 2026: GPT-5.6 is now official. OpenAI published its GPT-5.6 announcement, added model details to the API docs, and started a global rollout across ChatGPT, Codex, and the OpenAI API. The earlier watch version of this page has been reformatted into a confirmed update so readers can use the same URL for the […]