OpenAI announces its "next major model" Astra by solving ten previously unsolved math problems

OpenAI officially named its next model family Astra and said an internal version solved 10 long-open problems in mathematics and theoretical computer science.

The company released papers, reasoning traces, and Lean formalizations to support the claims, while emphasizing that no Millennium Prize Problems were solved.

The results are being seen as a major step toward AI-driven theorem proving and long-horizon scientific reasoning, with potential spillovers into related fields.