A fluid broke on Sep 5. Not in a river or pipe. But in the Navier-Stokes equations that describe every river and every pipe. A vortex spun inward, stretched thin, and reached a point where speed became infinite and mathematics stopped making sense. Nobody watched it happen. 10,000 software agents, working for 88 hrs, found it.
A proof-checker confirmed it. Then, OpenAI told the world that the Navier-Stokes problem, a question open since 1934, and one of the 7 Millennium Prize problems, was solved courtesy an internal OpenAI system that was more powerful than its latest GPT-6 Astra model.
