Google DeepMind’s Gemini and OpenAI’s AI chatbot ChatGPT won gold medals at the 2025 International Mathematical Olympiad (IMO). According to separate announcements from two companies, both AI models solved five of six problems during the competition, scoring 35 out of 42 points.
If you are unfamiliar, the IMO was founded in 1859 and is one of the oldest and most difficult mathematics competitions for school students in the world, with participants from more than 100 countries. It entails complex mathematical proofs rather than simple calculations, requiring deep logical reasoning and advanced knowledge.
Speaking about the test, Google DeepMind CEO Demis Hassabis stated that the Gemini Depp Think model officially entered the Olympiad and followed the rules, completing the natural language test in approximately 4.5 hours. He stated that Gemini’s mathematical proofs were generated entirely without human intervention. Select testers and mathematicians will now have access to the model before it is made available to all Google AI Ultra subscribers.
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On the other hand, OpenAI used an unnamed experimental research model. However, the participation was unofficial, with three former IMO medallists serving as independent evaluators to determine the results. The panel confirmed that the 35-point score was reached through unanimous agreement among the evaluators. The company then reportedly submitted the results to the IMO committee, but did not complete the board’s formal entry process.
While both passed, it caused friction between two technology giants. Hassabis criticised OpenAI for prematurely announcing the results, claiming that DeepMind waited out of respect for the IMO’s guidelines and the student participants. Despite this disagreement, both companies have once again demonstrated their reasoning and complex problem-solving abilities.