Machine Learning Street Talk · Monday, October 26, 2026
In September 2026, AI systems participated in Epoch AI's fixed budget test, where a pre-release OpenAI model proved Erdős problem 126 and disproved problem 74 by finding a counterexample. Additionally, OpenAI published a claimed resolution of the Navier-Stokes millennium problem accompanied by a Lean formalization.
“A pre-release OpenAI model proved Erdos problem 126. and disproved problem 74 by finding a counterexample. Both results were checked in lean. It resolved two of 68 problems, the other four models resolved none.”
“And on September the 8th, OpenAI also published a claimed resolution of the Navier-Stokes millennium problem alongside a lean formalization, but unfortunately not under the best circumstances.”