Mathematicians are combing through OpenAI’s AI-generated results on over 300 problems

OpenAI has handed the mathematics community a very large stack of homework to grade. According to The Washington Post, mathematicians are now analyzing OpenAI’s findings on over 300 problems, all generated by an internal AI model the company has not released. The scale is the story. On October 6-7, 2026, OpenAI published 722 manuscripts organized into 372 “result families,” covering number theory, algebraic geometry, analysis and theoretical computer science. What OpenAI actually released The model behind the results remains internal. OpenAI put the outputs into the open, but not the system that produced them. A key detail: many of the results come with Lean formalizations. Lean is a proof assistant, software that checks every logical step of a proof the way a compiler checks code. If a proof compiles in Lean, a machine has confirmed that each step follows from the previous one. As of early October 2026, 42% of the results, around 300, had Lean formalizations. The model was tested against approximately 4,000 problems. The released catalog is the subset of outputs OpenAI considered significant. OpenAI also provided limited summaries to help readers make sense of a portion of the res...