Claude 4 Sonnet

by Anthropic

Released · 87 days after Claude 3.7 Sonnet

Key info

Context window
Max output
Input price
$3.00 /1M
Output price
$15.00 /1M

Prices are the median across providers tracked by Artificial Analysis, not Opper billing.

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Intelligence Index26.0
Math Index38.0
Reasoning & knowledge
MMLU-Pro
84%
GPQA Diamond
68%
Humanity's Last Exam
4%
Long-context reasoning
46%
Coding
LiveCodeBench
45%
SciCode
37%
Agentic & tool use
Terminal-Bench Hard
27%
τ²-Bench Telecom
52%
Math & instruction following
AIME 2025
38%
IFBench
45%

Available routes

No routes currently available — Claude 4 Sonnet isn't routed through the Opper gateway right now. It's tracked here for its release history.

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Claude 4 Sonnet — release date & benchmarks | Opper AI