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OpenAI Claims ETH Refutation, Anthropic Releases Its Own Hours Later

Oct 27, 2026
TechCrunch
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Summary

OpenAI released solutions to three long-standing math problems, including a claimed refutation of the Exponential Time Hypothesis, a core assumption about computational difficulty. Anthropic released its own ETH refutation hours later, after its mathematician Levent Alpöge said OpenAI's work built on existing research. MIT's Ryan Williams is organizing a community response and an open letter.

Key Points

  • Ryan Williams tells TechCrunch the proof has "two or three alien-looking parts" that the whole community needs to work on together.
  • OpenAI asks Williams, Russell Impagliazzo and Ramamohan Paturi, who published ETH in 1999, to help interpret the solution.
  • OpenAI science lead Dan Roberts tells Williams the lab checked and is reasonably confident the result breaks no crypto systems.

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