OpenAI has officially unveiled its highly anticipated GPT-5.6 model series, introducing three distinct tiers. However, the initial rollout is restricted to a select set of partners.

OpenAI launched Sol, its most powerful model, to about 20 partners approved by Washington under Trump's AI executive order. Broad access comes later.

On Friday, the company unveiled the limited preview of its new GPT 5.6 model suite: Sol, Terra, and Luna.

OpenAI introduces GPT-5.6 to challenge Claude Mythos 5 - SiliconANGLE

Link to: https://openai.com/index/previewing-gpt-5-6-sol/