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Kimi K2.7 ranks second behind Fable 5 and above GPT 5.5 xhigh in ErdosBench's mathematical research test

Moonshot AI's Kimi K2.7 Code ranked second behind Claude Fable 5 max and ahead of GPT 5.5 xhigh in ErdosBench's mathematical research test, according to a public smoke test by ulam.ai founder Przemek Chojecki on June 13.

read1 min publishedJun 14, 2026

Przemek Chojecki (@prz chojecki) put Kimi K2.7 Code in the top tier of his ErdosBench public smoke test on June 13, ranking Moonshot AI's new coding model second behind Claude Fable 5 max and ahead of GPT 5.5 xhigh. Chojecki, the ulam.ai founder and mathematician who has been turning synthetic Erdos style research problems into a model evaluation track, said the rerun covered 14 public problems and compared Kimi K2.7 Code with Qwen 3.7 Max, Grok 4.3 and the leading models from earlier runs. H...

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