The Hallway Track
Research Findings

Sharing AI progress in mathematics

OpenAI · OpenAI Blog · Oct 06, 2026 · Research Findings

OpenAI frontier model solves open math problems, releases formal Lean proofs on GitHub

OpenAI released results showing an internal frontier model making progress on genuine open problems in mathematics, with formal Lean proof formalizations published on GitHub for public verification. This moves beyond benchmark performance to actual contributions to unsolved mathematical problems, representing a meaningful capability milestone. The open release of proofs enables independent verification and signals a new phase of AI-assisted mathematical research.

mathematics formal-proofs Lean OpenAI frontier-models AI-reasoning

Watch / read the original source →