OpenAI upgrading ChatGPT and Codex with new GPT-5.6 models in limited release - 9to5Mac

OpenAI unveils GPT-5.6 AI models with phased rollout and stronger safety checks - The Economic Times

OpenAI has unveiled GPT-5.6, its latest AI model family with Sol, Terra and Luna. The models will roll out gradually across ChatGPT, the API and Codex, with Sol adding Max and Ultra modes for advanced reasoning.