government policy

OpenAI announced three new models—GPT-5.6 Sol, Terra, and Luna—on June 26, 2026, but is limiting initial access to a "small group of trusted partners" following a U.S. government request. The company says it plans to make the models generally available "in the coming weeks."

The National Security Agency is using Anthropic's Mythos Preview, an unreleased cybersecurity model limited to roughly 40 organizations, according to Axios. The deployment comes weeks after the Department of Defense labeled Anthropic a "supply chain risk" following the company's refusal to grant Pentagon officials unrestricted access to its models.