Claude Opus 4.6 (Thinking): benchmark results

Claude Opus 4.6 evaluated with thinking enabled for harder reasoning tasks. Provider: Anthropic. Released 2026-02-05. Access: API.

Aggregate Rating 1789 ± 6, rank #158 of 2168 rated models, from 361 benchmark results.

Strongest benchmark results

BenchmarkScoreMetricPercentile
ARC-AGI-2 Verified (Opus 4.6 System Card)68.8Score (%)100
BioMysteryBench (Opus 4.6 System Card)61.5Score (%)100
BioPipelineBench (Opus 4.6 System Card)53.1Score (%)100
BrainBench (Commonsense)80.3Accuracy (%) over all responses to the 100 BrainBench questi100
BrainBench (Commonsense) - Consistency74Consistency (%): the share of the 100 English BrainBench que100
CCTU (Thinking) - Solve Rate34.17Solve rate (%): the share of cases in which the model solves100
CharXiv Reasoning No Tools (Opus 4.6 System Card)68.5Score (%)100
CharXiv Reasoning With Cropping (Opus 4.6 System Card)77.4Score (%)100
ClawMark - Task Success20Task success rate (%): tasks on which every checker passes; 100
ComboShoppingBench - Coupon Legality99.7Pass rate (%)100
Finance Agent (Opus 4.6 System Card)60.7Accuracy (%)100
GBQA48.39Recall (%) in Quality Assurance Mode (the agent also reads t100

Interactive version: theaggregate.ai/model?slug=claude-opus-4-6-thinking · How It Works · Data refreshed daily, snapshot 2026-10-20.