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Claude Sonnet 4.6

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Claude Sonnet 4.6 is an AI model from Anthropic.

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

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Notes

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Attribution

Attribution policy →
Context
1M
Input
$3
/1M tok
Output
$15
/1M tok
Blended
$6
#409/ 441/1M · 3:1
Speed
47
#96/ 441tok/s
Cache read
$0.15
0.05x input
Cache write
$1.88
0.63x input

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

Reasoning effortIndexSpeed
Reasoning, max48.40 t/s
Non-reasoning, high36.80 t/s
Non-reasoning, low35.147 t/s

Intelligence Index per reasoning-effort setting, via Artificial Analysis · pricing identical across tiers

Reported on 30 evals across 11 domains - best 92.2% on Infraresolutionbench · #1 of 35

Reported eval scores

30
Infraresolutionbench92.2
AutomationBench47.6
Ar Credit Release V147.2
Codenames1.4
MMMLU89.3
TaxEval v277.1
CorpFin v265.3
MortgageTax67.7
Finance Agent (v2)51
LiveBench - Coding80
Terminal-Bench (Hard)42.4
LiveBench - Reasoning86.4
LiveBench - Language77.7
LiveBench - Data Analysis76.1
LiveBench - Math86.5
IFBench42.4
LiveBench - Instruction Following63.9
LiveBench78.4
Humanity's Last Exam (HLE)11.2
Vals Index60.1