Claude Opus 4.6 (Thinking)

Release Date: Feb 5, 2026

Developer Anthropic 🇺🇸

Context Window 1M

Max Output Tokens 128k

Token Costs (in/out) $5.00/25.00

Weights Private

Input Modalities

Accuracy

73.39 %

Avg. Cost (In/Out)

$ 5.00 / $ 25.00

Latency

5 min 8 s

BenchmarksAccuracyRankings

MedCode

0.0%

±2.08

18/86

MedScribe

0.0%

±1.94

12/85

MortgageTax

0.0%

±0.91

14/95

SAGE

0.0%

±3.34

9/76

TaxEval v2

0.0%

±0.83

8/141

Vibe Code Bench v1.1

0.0%

±4.68

30/85

GPQA Diamond

0.0%

±1.19

27/133

LiveCodeBench

0.0%

±1.02

36/138

LegalBench

0.0%

±0.37

17/137

MMLU Pro

0.0%

±0.46

13/133

MMMU

0.0%

±0.88

25/89

SWE-bench

0.0%

±1.85

27/84

Proprietary BenchmarksAcademic BenchmarksIndustry Partners

View Hyperparameter Settings

Default Provider : Anthropic

Temperature: 1

Top P: Default

Top K: Default

Max Output Tokens: 128,000

Compute Effort: max