FrontierFebruary 20, 2026via OpenAI Blog
Our First Proof submissions
Why it matters
OpenAI is publicly benchmarking its reasoning capabilities against expert-level mathematical problems through the First Proof challenge, signaling a major capability milestone in AI reasoning and positioning against competitors on a high-difficulty domain.
Key signals
- OpenAI submitting proof attempts to First Proof math challenge
- Testing research-grade reasoning on expert-level problems
- Focus on mathematical reasoning as competitive capability benchmark
- Public disclosure of reasoning performance on specialized domain
The hook
OpenAI's AI just tackled expert-level math proofs. Here's what reasoning at research-grade looks like.
We share our AI model’s proof attempts for the First Proof math challenge, testing research-grade reasoning on expert-level problems.