OpenAI unveils GPT-5.6 Sol, Terra and Luna models — but only accessible to limited preview partners for now, per US Gov
OpenAI is announcing a limited preview of its newest frontier AI model GPT-5.6 family, which comes in three variants: Sol, Terra, and Luna.
Sol is for the hardest problems, such as complex coding and security research; Terra is for high-volume business tasks like customer suppor…