Claude 3.7 Sonnet vs Gemini 2.5 Flash Preview

Compare Claude 3.7 Sonnet by Anthropic against Gemini 2.5 Flash Preview by Google AI, in 6 community votes, claude 3.7 sonnet wins 80% of head-to-head duels, context windows of 200K vs 1.0M, tested across 27 shared challenges. Updated April 2026.

Which is better, Claude 3.7 Sonnet or Gemini 2.5 Flash Preview?

Claude 3.7 Sonnet is the better choice overall, winning 80% of 6 blind community votes on Rival. Claude 3.7 Sonnet costs $3/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview. Context windows: 200K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3.7 Sonnet and Gemini 2.5 Flash Preview

Claude 3.7 Sonnet is made by anthropic while Gemini 2.5 Flash Preview is from google. Claude 3.7 Sonnet has a 200K token context window compared to Gemini 2.5 Flash Preview's 1049K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview. In community voting, In 6 community votes, Claude 3.7 Sonnet wins 80% of head-to-head duels.

In 6 community votes, Claude 3.7 Sonnet wins 80% of head-to-head duels. Claude 3.7 Sonnet leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 6+ human preference judgments for this pair.

Web Design: Claude 3.7 Sonnet wins 67% of votes
Image Generation: Claude 3.7 Sonnet wins 100% of votes
Our Verdict
Claude 3.7 Sonnet
Claude 3.7 SonnetWinner
Gemini 2.5 Flash Preview
Gemini 2.5 Flash PreviewRunner-up

Pick Claude 3.7 Sonnet. In 6 blind votes, Claude 3.7 Sonnet wins 80% of the time. That's not luck.

Claude 3.7 Sonnet particularly excels in Image Generation, Web Design. Gemini 2.5 Flash Preview is 25x cheaper per token — worth considering if cost matters.

Clear winner
Writing DNA

Style Comparison

Similarity
67%

Claude 3.7 Sonnet uses 20.1x more headings

Claude 3.7 Sonnet
Gemini 2.5 Flash Preview
62%Vocabulary51%
35wSentence Length15w
0.99Hedging0.70
1.2Bold4.1
4.3Lists3.3
0.00Emoji0.00
1.78Headings0.09
0.23Transitions0.24
Based on 13 + 12 text responses
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Claude 3.7 SonnetGemini 2.5 Flash Preview

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