Has OpenAI confirmed it?

No. OpenAI has not confirmed it as of Oct 28.

Did frontier AI labs release proofs claiming to refute the Exponential Time Hypothesis, and is MIT’s Ryan Williams organizing a community response?

ReportedLast checked Oct 28, 2026

OpenAIFirst seen Oct 27

TechCrunch covers OpenAI and Anthropic ETH drops and Williams’ response effort; proofs not independently audited in this run.

Evidence timeline · 1 source · newest first

Oct 27
Reported
TechCrunch reports that OpenAI released solutions claiming a refutation of the Exponential Time Hypothesis, with Anthropic later posting its own ETH work, and that MIT’s Ryan Williams is helping interpret the proofs with ETH authors Impagliazzo and Paturi. Williams says parts of the OpenAI proof look “alien” and that the community needs a joint response, while OpenAI told him it does not believe the result breaks cryptography.
Source: TechCrunch

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