CAIS releases HLE-Diamond, an updated Humanity's Last Exam benchmark
socoolandawesome · reddit · 2026-09-24
CAIS has released HLE-Diamond, an updated version of the Humanity's Last Exam benchmark. The announcement came via its X account, with details on the lastexam.ai blog (lastexam.ai/blog/hle-diamond). HLE is a well-known benchmark for testing frontier models on extremely hard human expert questions, and this refresh provides a new yardstick for evaluating model limits.
Related event: CAIS Releases HLE-Diamond Benchmark, GPT-6 Astra Tops at 60.6%(3 posts)→
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