OpenAI releases GPT-5.6 in limited preview after Trump administration request for staged rollout

According to TechCrunch and The Verge, OpenAI released GPT-5.6 on Friday, June 26, 2026, in limited preview form with three variants: Sol (flagship), Terra (medium-tier for everyday use), and Luna (faster, lower-cost option). The Trump administration requested the staged rollout citing security concerns, requiring OpenAI to limit access to preapproved partners whose participation has been shared with the government. OpenAI said in a blog post it does not believe government approval processes should become the long-term default and hopes to expand access to all users within weeks.