Claude Sonnet 4
Claude Sonnet 4 is a reasoning model created by Anthropic. It is served by Anthropic API.
Self-hostableNo
Reasoning TierExtended
Max Tokens1M in / 64K out
Training Cutoff2025-03
Release Date2025-05-14
SWE-Bench Resolved ↗76.8%
Claude Sonnet 4 Tokenizer
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Claude Sonnet 4 Pricing
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$0.00
Input: $0.00·Output: $0.00
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