Anthropic
Anthropic
Language model · United States ·May 2025

Claude Sonnet 4

Language Proprietary
17
Benchmarks

About Claude Sonnet 4

Claude Sonnet 4 is an AI model developed by Anthropic, in the language category, released in 2025, made available as a proprietary (API-only) model.

On this page you'll find Claude Sonnet 4's full specifications, including 17 benchmark results. Review provider pricing and benchmark scores below, or compare Claude Sonnet 4 head-to-head with other language models.

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Claude Sonnet 4 benchmark scores
Benchmark Category Score Variant
BrowseComp agentic 14.7%
BrowseComp agentic 12.2% react-cited-tongyi
BrowseComp-Zh agentic 29.1 react-cited-tongyi
GAIA agentic 68.3 react-cited-tongyi
TAU-bench Airline agentic 60%
TAU-bench Retail agentic 80.5% reported in GLM-4.5 paper
Terminal-Bench 2.0 agentic 35.5%
WebWalkerQA agentic 61.7 react-cited-tongyi
xbench-DeepSearch agentic 65 react-cited-tongyi
SWE-bench Verified code 70.4%
IFEval general 88.7%
MMLU general 91.9%
MultiChallenge general 55.3%
Frames long-context 80.7 react-cited-tongyi
Humanity's Last Exam reasoning 20.3% react-cited-tongyi
SimpleQA safety 18.5%
BFCL v3 tool-use 75.2%

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Frequently asked questions

What is Claude Sonnet 4?

Claude Sonnet 4 is an AI model developed by Anthropic, in the language category, released in 2025. It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Claude Sonnet 4?

Claude Sonnet 4 was developed by Anthropic and released in 2025.

Is Claude Sonnet 4 open source or proprietary?

Claude Sonnet 4 is a proprietary model. It is accessed through an API rather than by downloading the weights.

How much does Claude Sonnet 4 cost?

Pricing for Claude Sonnet 4 depends on the provider. See the providers table on this page for the latest API rates.

How does Claude Sonnet 4 perform on benchmarks?

Claude Sonnet 4 is benchmarked across 17 evaluations on GenAIList, including BrowseComp (14.7%). See the full benchmark table below and compare it with other models.

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