AnalysisAI ModelsAugust 3, 2026

OpenAI's Astra model solves 10 open math problems

An internal version of OpenAI's next model family, Astra, solved 10 open problems in math and theoretical CS, including the first explicit construction of a non-sofic group (open since 1999), at a total inference cost under $2,000. Each result ships with a Lean 4 certificate on GitHub.

Featured · Sébastien Bubeck

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