Anthropic: Claude Sonnet 4
anthropic/claude-sonnet-4
Price Published
- Input
- $3.00 per million tokens
- Output
- $15.00 per million tokens
Optional features and fallback routes can cost extra. Confirm current terms with the provider.
Specifications Published
- Context window
- 200,000 tokens
- Max output
- 64,000 tokens
- Tool calling
- Supported
- Vision input
- Supported
- Reasoning
- Supported
- Knowledge cutoff
- Jan 31, 2025
- Listed since
- May 22, 2025
Measured by the Club Signed cheapoS reports
Not yet observed No signed request reports for this exact route yet. Missing reports aren't a failure or a zero.
How we measure · Reports come from cheapoS members who share model details.
Benchmarks Artificial Analysis via OpenRouter
- Intelligence index
- Not reported
- Coding index
- 37.6
- Agentic index
- Not reported
Scores from Artificial Analysis, as distributed in the OpenRouter catalog. They measure test suites, not request reliability on real work.
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anthropic/claude-sonnet-4as a worker or reviewer, and start with a small task you can check.
About this model OpenRouter description
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...
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Catalog data from the OpenRouter model catalog, retrieved Sep 29, 2026, 12:37 PM UTC. A listing isn't a live availability check.