Person

Sébastien Bubeck

Sébastien Bubeck is a French-American computer scientist and artificial intelligence researcher, known for his work on convex optimization and machine learning theory. He led AI research at Microsoft (including the Phi small language models and the 'Sparks of AGI' GPT-4 study) before joining OpenAI in 2024.

http://sbubeck.com/ Wikipedia

Technology · August 7, 2026

OpenAI Says an Unreleased Model Cracked Ten Long-Open Math Problems for About $2,000

Claims like this usually can't be checked from the outside; this one comes with proofs anyone can run. It also arrives as mathematicians debate whether AI labs should be announcing results by press release rather than by peer review.