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OpenAI makes breakthrough on 80-year-old maths problem

Company says work on Paul Erd?s planar unit distance problem shows advance in AI reasoning

OpenAI has claimed a further advance in AI reasoning after its technology successfully tackled an 80-year-old maths problem.

The company behind ChatGPT said it had made a breakthrough with a challenge first posed by Hungarian mathematician Paul Erd?s in 1946: the planar unit distance problem.

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May 21, 2026 OpenAI Sam Altman Technology

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