OpenAI has unveiled GPT-5.6, its latest family of AI models, but unlike previous launches, the rollout is beginning under restrictions tied to a new US government review process. The company is introducing three models - GPT-5.6 Sol, GPT-5.6 Terra and GPT-5.6 Luna - with access initially limited to around 20 companies approved by the US government. While OpenAI says it expects broader availability in the coming weeks, it also acknowledged that the current approval process is a temporary measure as Washington develops a framework for releasing advanced AI systems.

At the request of the U.S. government, OpenAI will initially make its new GPT-5.6 model available only to select partners, with access approved on a "customer by customer" basis.…

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

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