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Anthropic

Claude 4 Opus

ReasoningClosed weights
Intelligence
20.6
Rank 238 of 744 measured models
Price/1M
$30
Rank 651 of 659 measured models
Context window
200K
Rank 618 of 1199 measured models

Claude 4 Opus (Reasoning) scores 20.6 on the Artificial Analysis Intelligence Index, ranking 238th of 744 measured models. The closest models on this index are GPT-5.4 nano (20.7), GPT-5 Mini (batch) (20.6), and K2 Horizon 7B (20.6). At $30 per million tokens (3:1 input/output blended price), it is more expensive than GPT-5.4 nano ($0.463).

Artificial Analysis Indices
Reasoning
Intelligence20.6
Rank 238 of 744 measured models
Math73.3
Rank 86 of 270 measured models
Reasoning levels
Each point is a reasoning level of this model: more reasoning often raises the score but costs more. Select a point to open that level.
Intelligence Indexmost efficient ↗Price / 1M tokens
Standard Benchmarks
MMLU Pro87.3%
Rank 11 of 349 measured models
GPQA Diamond79.6%
Rank 210 of 619 measured models
HLE12.3%
Rank 288 of 664 measured models
LiveCodeBench63.6%
Rank 105 of 343 measured models
MATH-50098.2%
Rank 14 of 202 measured models
AIME 202475.7%
Rank 30 of 194 measured models
AIME 202573.3%
Rank 86 of 270 measured models
IFBench53.7%
Rank 161 of 450 measured models
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.

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