Expired50% confidenceEventExact time
OpenAI's flagship model GPT-5.6 Sol Ultra proved the Cycle Double Cover conjecture, which had been unsolved for 50 years; the result was generated by a publicly available version of the model and announced by Noam Brown.
1
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50%
Confidence
Medium-term (~90 days)
Relevance
7/22/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/20/2026(expired)
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