Loeber Says Unreleased OpenAI Model Disproved Hadwiger Conjecture, His Prover Failed
John Loeber says his custom Lean theorem prover failed to close the Hadwiger Conjecture, then an unreleased OpenAI frontier model disproved it. He reports that model ran 4,000 major problems at about 3.5 hours of compute each, producing hundreds of claimed results. Loeber calls his elaborate engineering outweighed by base-model gains.