OpenAI announced that its unreleased experimental AI system, with 10,000 AI agents collaborating for 88 hours, proposed a solution to one of the seven Millennium Prize Problems in mathematics, the "Navier-Stokes existence and smoothness" problem. The system is reportedly more powerful than GPT-6 Astra, but the independence of the proof is currently being questioned, with New York University mathematician Tristan Buckmaster raising doubts, which OpenAI has denied. OpenAI stated it does not intend to claim the $1 million prize, viewing this solely as evidence of the rapid progress of its research system.