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Claude Opus 4.6

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Claude Opus 4.6 is an AI model from Anthropic.

Publisher
Anthropic
Family
Claude
Context
1M
Input
Output
License
proprietary
Released
5 Feb 2026

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Notes

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Attribution

Benchmark scores
frontiermathAALiveBenchSWE-benchmatharenaprime-hubOpenRewardVals AI
Attribution policy →
Context
1M
Input
$5
/1M tok
Output
$25
/1M tok
Blended
$10
#435/ 458/1M · 3:1
Speed
45
#211/ 458tok/s
Cache read
$0.50
0.10x input
Cache write
$6.25
1.25x input

Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter

Reported on 34 evals across 12 domains - best 89.3% on LiveBench - Math · #10 of 57

Reported eval scores

34
MRCRV293
Codenames2.1
AutomationBench56.1
Infraresolutionbench84.9
KellyBench88771
AIME202599.8
Autonomous Skill Evolution1.5
Skillsbench44.5
LiveBench - Reasoning88.7
LiveBench - Language83.3
Terminal-Bench (Hard)48.5
LiveBench - Coding78.2
SWE-bench Multilingual72
LiveBench - Math89.3
LiveBench - Data Analysis69.9
IFBench44.6
LiveBench - Instruction Following63.3
LiveBench78.8
Humanity's Last Exam (HLE)18.6
FrontierMath40.7