Claude Opus 5.5 | Humanity's Last Exam Full set — With tools

Anthropic's Claude Opus 5.5 evaluation results on Humanity's Last Exam Full set — With tools

Score: 67.7%

Reasoning level: adaptive thinking, max; with tools

Source

Claude Opus 5.5 (Registry No. 20015)

Anthropic

Humanity's Last Exam Full set — With tools