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OpenAI announced it used an internal AI model, more powerful than its newly released GPT-6 Astra, running 10,000 concurrent agents, to find a solution to the Navier-Stokes existence and smoothness problem—one of the seven Millennium Prize Problems that has remained unsolved for roughly 90 years. The announcement, made in a blog post and covered by the New York Times and Wired, was framed as a landmark achievement for AI-assisted mathematics. However, the claim quickly drew controversy. A NYU mathematician accused OpenAI of 'fighting dirty' on the career-making problem, which carries a $1 million bounty for the first verified solution, raising questions about credit, verification, and the company's conduct in publicizing the result.