Benchmarks & TestsFeatured2 min read
Benchmark Analysis
Humanity's Last Exam Opened With a 2.7% Score. The Best Models Still Can't Break 65%
Humanity's Last Exam was built by CAIS and Scale AI to succeed MMLU as the hardest general LLM benchmark. Two years on, even Claude Opus 5's leading 64.7% score sits well below the 90% human expert baseline.
2026-07-31