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Claude 4.1 Opus

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Claude 4.1 Opus is an AI model from Anthropic.

Publisher
Anthropic
Family
Claude
Context
200K
Input
Output
License
proprietary
Released
5 Aug 2025

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Attribution

Benchmark scores
frontiermathAALiveBenchprime-hubVals AI
Attribution policy →
Context
200K
Input
$18.75
/1M tok
Output
$75
/1M tok
Blended
$32.81
#409/ 414/1M · 3:1
Speed
37
#209/ 414tok/s

Price & speed via Artificial Analysis · ranked across tracked models

Reported on 24 evals across 11 domains - best 88.0% on MMLU-Pro · #7 of 342

Reported eval scores

24
NanochatAquaRat0
Dakota18900
MMLU-Pro88
Humanity's Last Exam (HLE)11.9
LiveBench64.1
SciCode40.9
GPQA Diamond80.9
Terminal-Bench (Hard)34.3
LiveBench - Coding74.7
IFBench55.4
LiveBench - Language72.8
LiveBench - Reasoning72.3
LiveBench - Math73.2
LiveBench - Instruction Following42.4
LiveBench - Data Analysis49
AIME 2025: Problems from the American Invitational Mathematics Examination80.3
LiveCodeBench65.4
τ²-bench (Tau²-bench)71.4
MedCode41.4
MedScribe71.8
TaxEval v271.5
MortgageTax56.1
FrontierMath7.2
SAGE30.4