OpenAI releases GPT-5.6: Frontier intelligence that scales with your ambition openai.com

OpenAI is launching the GPT‑5.6 family of models for general availability following their limited preview⁠: our new flagship, Sol, alongside Terra, a balanced model for everyday work, and Luna, our most cost-efficient model.

GPT‑5.6 is available starting today across ChatGPT, Codex, and the OpenAI API. The rollout is starting globally now and will continue gradually toward full availability over the next 24 hours.