OpenAI launches GPT-5.6 family with Sol, Terra, and Luna

The GPT-5.6 family includes three models—Sol, Terra, and Luna—rolling out now in ChatGPT, Codex, and the API. ChatGPT Work, a new agent powered by Codex and GPT-5.6, can take actions across apps and workflows. Computer Use is also faster and more token-efficient with GPT-5.6.