We achieved gold medal-level performance 🥇on the 2025 International Mathematical Olympiad with a general-purpose reasoning LLM! Our model solved world-class math problems—at the level of top human contestants. A major milestone for AI and mathematics.

This is an LLM doing math and not a specific formal math system. It’s part of our main push towards general intelligence.

The International Mathematical Olympiad (IMO) is the world’s most prestigious math competition—100+ countries compete, and only about 9% of participants earn gold. Problems require deep reasoning, not advanced coursework.

To be clear: We’re releasing GPT-5 soon, but the model we used at IMO is a separate experimental model. It uses new research techniques that will show up in future models—but we don't plan to release a model with this level of capability for many months.

The model was trained using techniques developed through years of OpenAI’s reasoning research—methods designed to help our models break down problems and deliberate over multiple steps. Learn more: