Models from two labs reach gold-medal standard at the math olympiad

On the 2025 International Mathematical Olympiad problems, models from Google DeepMind and OpenAI each solved five of six problems for 35 points out of 42 — the gold-medal threshold. Google DeepMind's Gemini Deep Think was an official entrant, graded by IMO coordinators, and announced on 21 July. OpenAI was not an official entrant; it had its solutions graded by former IMO medallists and announced on 19 July. Some criticised OpenAI for going first, as the IMO had asked companies to hold off. Because the two results were verified by different routes, whether they can be compared side by side remained open to argument.