
OpenAI launches GPT-5.6: Sol, Terra, and Luna, three models for every need
OpenAI has announced the preview launch of the GPT-5.6 series, comprising three models: Sol (flagship), Terra (balanced), and Luna (fast and economical). Terra matches GPT-5.5 at half the cost, and Luna offers strong capability at the lowest price. The preview is limited at the request of the U.S. government.



