OpenAI just used 10,000 AI agents to solve a Millennium Prize Problem in 4 days. Navier-Stokes. Unsolved since the 1930s. An actual open problem in fluid dynamics that's stumped mathematicians for 90 years. The numbers are absurd: – 10,000 concurrent agents – 88 hours to the proof – 130 billion output tokens – 2.7 million messages – Verified formally in Lean They ran competing agent groups on different framings of the problem, merged their best insights with Codex, re-seeded, and…