On 8 September 2026, OpenAI announced a solution to the Navier–Stokes existence and smoothness problem, but mathematician Tristan Buckmaster claimed that his and Levent Alpöge's advances on Euler equations were leaked to OpenAI days earlier and may have inspired the solution. OpenAI denied direct use of their work, while the controversy highlighted tensions between AI companies competing to solve Millennium Prize Problems, with Fields Medalists warning against AI treating unsolved problems as benchmarks without advancing human understanding.