OpenAI says its unreleased Astra model solved or made substantial progress on 10 long-standing problems spanning mathematics and theoretical computer science. The company published machine-verifiable Lean 4 proof certificates on GitHub. OpenAI estimates reproducing the work through its Sol API would cost about $2,000. Shortly afterward, Anthropic researcher Levent Alpoge said Claude Fable independently solved five of the same problems in less than 24 hours using only generic prompts and no internet access. The reported achievements include work on arithmetic circuit complexity, quantum parallel repetition, lattice cryptography and the closest vector problem. OpenAI has not publicly responded to Anthropic's claims. While independent peer review remains ongoing, both announcements suggest frontier AI models are beginning to tackle genuine research-level mathematical reasoning, with formal proof systems providing stronger evidence than traditional benchmark scores alone.
OpenAI says its unreleased Astra model solved or made substantial progress on 10 long-standing problems spanning mathematics and theoretical computer science. The company published machine-verifiable Lean 4 proof certificates on GitHub. OpenAI estimates reproducing the work through its Sol API would cost about $2,000. Shortly afterward, Anthropic researcher Levent Alpoge said Claude Fable independently solved five of the same problems in less than 24 hours using only generic prompts and no internet access. The reported achievements include work on arithmetic circuit complexity, quantum parallel repetition, lattice cryptography and the closest vector problem. OpenAI has not publicly responded to Anthropic's claims. While independent peer review remains ongoing, both announcements suggest frontier AI models are beginning to tackle genuine research-level mathematical reasoning, with formal proof systems providing stronger evidence than traditional benchmark scores alone.