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On the Navier–Stokes Millennium Prize Problem

9 September 2026 · filed under 048aa76fa30e

OpenAI has reported a resolution to the Navier–Stokes existence and smoothness problem, one of the seven Millennium Prize Problems, using an unreleased model. The claim was noted by Simon Willison, who linked to OpenAI’s announcement and to background pages on the Navier–Stokes problem and the Millennium Prize Problems generally, describing the result as impressive.

The Navier–Stokes existence and smoothness problem concerns whether solutions to the Navier–Stokes equations, which describe the motion of fluids, always exist and remain smooth (free of singularities) in three dimensions. It has stood unresolved since the Clay Mathematics Institute listed it among the seven Millennium Prize Problems, each carrying a one million dollar reward for a correct solution.

The supplied material does not include OpenAI’s own announcement text, so this bulletin cannot detail the method, the model involved, or the specifics of the claimed proof. Willison’s commentary is limited to the brief characterization noted above and to providing links for readers seeking the primary announcement and problem background.

Verification of Millennium Prize claims traditionally proceeds through formal peer review, given the seven problems’ history of attracted and later withdrawn solutions. No indication of independent mathematical review accompanies the material available here. Readers are directed to OpenAI’s announcement for the full technical claim.

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  1. On the Navier–Stokes Millennium Prize ProblemSimon Willison