AnthropicAnthropic

Claude 3.7 Sonnet

Extended thinking for deep reasoning

Claude 3.7 Sonnet introduced extended thinking — the ability to reason through problems step by step before responding. This makes it particularly capable at multi-step mathematics, complex coding, and tasks that benefit from deliberate analysis.

Try Claude 3.7 Sonnet

Specifications

Context window200k tokens
Input price$3.00 / 1M tokens
Output price$15.00 / 1M tokens
Credits per query3 cr
Released2025-02
LicenseProprietary

Features

VisionTool useJSON modeFunction callingCodeExtended thinking

Benchmark Scores

What do these mean?

Sourced from official model cards and academic papers. Higher is better.

PhD-level science & reasoning

62.4%

Mathematical olympiad problems

43.3%

Chatbot Arena human preference ranking

1291

Python coding — pass@1 rate

93.7%

Competition-level mathematics

78.8%

General knowledge across 57 academic domains

89%

Multi-turn instruction following (out of 10)

Real-world GitHub issue resolution rate

62.3%