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Claude 3.7 Thinking Sonnet vs Claude Sonnet 4

Compare Claude 3.7 Thinking Sonnet and Claude Sonnet 4, both from Anthropic, in 42 community votes, claude 3.7 thinking sonnet and claude sonnet 4 are closely matched, context windows of 200K vs 200K, tested across 34 shared challenges. Updated April 2026.

Which is better, Claude 3.7 Thinking Sonnet or Claude Sonnet 4?

Claude 3.7 Thinking Sonnet and Claude Sonnet 4 are closely matched based on 42 community votes. Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3.7 Thinking Sonnet and Claude Sonnet 4

Claude 3.7 Thinking Sonnet is made by anthropic while Claude Sonnet 4 is from anthropic. Claude 3.7 Thinking Sonnet has a 200K token context window compared to Claude Sonnet 4's 200K. On pricing, Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $3/M for Claude Sonnet 4. In community voting, In 42 community votes, Claude 3.7 Thinking Sonnet and Claude Sonnet 4 are closely matched.

In 42 community votes, Claude 3.7 Thinking Sonnet and Claude Sonnet 4 are closely matched. Claude 3.7 Thinking Sonnet leads in Web Design, while Claude Sonnet 4 leads in Image Generation. Based on blind community voting from the Rival open dataset of 42+ human preference judgments for this pair.

Web Design: Claude 3.7 Thinking Sonnet wins 55% of votes
Image Generation: Claude Sonnet 4 wins 75% of votes
Our Verdict
Claude 3.7 Thinking Sonnet
Claude 3.7 Thinking Sonnet
Claude Sonnet 4
Claude Sonnet 4

Too close to call. Pick based on your use case.

Pick Claude 3.7 Thinking Sonnet for Web Design. Pick Claude Sonnet 4 for Image Generation.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Claude Sonnet 4 uses 87.9x more emoji

Claude 3.7 Thinking Sonnet
Claude Sonnet 4
61%Vocabulary62%
49wSentence Length111w
0.64Hedging0.40
2.2Bold5.0
4.5Lists9.3
0.00Emoji0.88
1.81Headings2.16
0.21Transitions0.33
Based on 21 + 17 text responses
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Claude 3.7 Thinking SonnetClaude Sonnet 4

279 AI models invented the same fake scientist.

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AI Hallucination Index 2026
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