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JR
Researcher

James R. Lee

Researcher at OpenAI

LinkedIn

OpenAI researcher leading reasoning work who tested the new model on First Proof problems and observed it solving multiple problems during training.

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OpenAI First Proof Submissions
OpenAIannouncementpositiveFeb 23, 2026

OpenAI's internally-trained model successfully solved at least five of ten First Proof math problems requiring checkable proofs in specialized domains, demonstrating advances in rigorous reasoning and long-chain inference.

“OpenAI researcher leading reasoning work who tested the new model on First Proof problems and observed it solving multiple problems during training.”

AI ResearchFoundation ModelsReinforcement LearningAI Benchmarks