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Claude Opus 4.5 on Humanity's Last Exam: 43.2

Child of Humanity's Last Exam

Metadata

Source Tablebenchmark_results
Source IDS7sl1SnWDF
Source URLwww.vellum.ai/blog/claude-opus-4-5-benchmarks
ParentHumanity's Last Exam
Children
CreatedApr 24, 2026, 7:48 PM
UpdatedApr 24, 2026, 7:48 PM
SyncedApr 24, 2026, 7:48 PM

Record Data

idS7sl1SnWDF
benchmarkIdXt4Dv7KAey
modelIdClaude Opus 4.5(ai-model)
score43.2
unitpercent
date2025-11-24
sourceUrlwww.vellum.ai/blog/claude-opus-4-5-benchmarks
notesHumanity's Last Exam - with web search enabled

Source Check Verdicts

confirmed98% confidence

Last checked: 4/24/2026

Inline sourcing: confirmed

Debug info

Thing ID: S7sl1SnWDF

Source Table: benchmark_results

Source ID: S7sl1SnWDF

Parent Thing ID: Xt4Dv7KAey