The Navier Stokes solution was the result of a collaboration of ~10,000 (!) agents working together. Over the past year, we’ve been training models to collaborate through multiagent RL. It’s been amazing to see how much better the models have become at this: it seems clear now that one of the most effective ways to solve hard problems is to give models huge amounts of unstructured parallel test-time compute and let them decide how to work together.
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Yesterday, we made GPT-5.6 Sol Ultra generally available. Today, we're sharing that it produced a proof of the 50-year-old Cycle Double Cover Conjecture using 64 subagents in just under one hour. We're sharing the prompt and proof below. We're excited to see what you all do with Ultra!
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