This photograph taken in Mulhouse, eastern France on October 19, 2023, shows figurines next to the ChatGPT logo. SEBASTIEN BOZON/Getty Images OpenAI's GPT-5.6 family — Sol, Terra, and Luna — has been ...
OpenAI's GPT-5.6 Sol advanced another step toward general availability on July 6 when an OpenAI Codex engineer publicly confirmed that Sol Ultra — the model's highest-compute tier — would ship inside ...