OpenAI’s Navier-Stokes release included a Lean 4 formal proof

OpenAI recently announced a proof regarding the Navier-Stokes equations, generating significant interest. Notably, alongside their conventional human-readable proof, OpenAI also released a Lean 4 formal proof. This formalization process, which typically demands immense effort (estimated at 132,800 person-hours for a paper of this length), was verified by OpenAI in just 17 hours using Lean. This dramatic reduction in verification time, by four orders of magnitude, is considered revolutionary.