GPT-5.6 Said to Solve All IMO 2026 Problems

pequalnp92 · reddit · 2026-07-17

A post claims that GPT-5.6 Pro solved all six problems from the 2026 IMO on its first attempt, without any human help or guidance. The author adds that the IMO is one of the toughest academic competitions globally, a level of performance typically achieved by only a very few top contestants.

The poster, a former IMO medalist, included an evaluation report detailing the model's answering process and performance on competition problems; they are also continuing to work on comparative reports across different models and harness-enhanced versions.

Related event: Rumor Claims GPT-5.6 Solved All IMO 2026 Problems(4 posts)→

Original post →

More from Models

Models channel →