OpenAI on X: “This model represents a step-function improvement on many benchmarks, …”

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@OpenAI

Sep 8

We’re sharing a solution to the Navier-Stokes Millennium Prize Problem, one of the deepest problems at the frontier of mathematics.

The proof was produced by a group of agents, using an OpenAI next-generation model significantly more capable than GPT-6 Astra.

The problem

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OpenAI

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This model represents a step-function improvement on many benchmarks, and its training is ongoing.

Our internal model group arrived at the Navier–Stokes solution in 88 hours, using around 10,000 coordinating AI agents.

Throughout the effort, we maintained the strict

Sep 8, 2026, 5:20 PM UTC

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OpenAI on X: “This model represents a step-function improvement on many benchmarks, …” | PeekX