OpenAI Astra
OpenAI Astra is a next-generation model family announced in pre-release on August 1, 2026, with no public release date, API access, or weights yet. An internal version reportedly solved 10 unsolved problems in group theory and quantum complexity, with a 249-page manuscript and Lean 4 certificates published, but development slowed after evaluations could not rule out a "Critical" cyber capability level, prompting OpenAI to voluntarily inform the White House of the delay.