Anthropic's Fable 5.1 Scores 65% on Humanity's Last Exam
jakehalloran1 · x · 2026-09-02
Anthropic's new model Fable 5.1 scored 65% on the Humanity's Last Exam (HLE) benchmark. The test consists only of multiple-choice and fill-in-the-blank questions and has not yet been saturated by models; Fable 5.1 achieved this score with tool use.
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