Claude 3.7 Thinking Sonnet vs Gemini 2.5 Flash Preview (thinking)
Compare Claude 3.7 Thinking Sonnet by Anthropic against Gemini 2.5 Flash Preview (thinking) by Google AI, in 5 community votes, claude 3.7 thinking sonnet wins 80% of head-to-head duels, context windows of 200K vs 1.0M, tested across 20 shared challenges.
Reasoning: Claude 3.7 Thinking Sonnet wins 100% of votes
Our Verdict
Claude 3.7 Thinking SonnetWinner
Gemini 2.5 Flash Preview (thinking)Runner-up
Pick Claude 3.7 Thinking Sonnet. In 5 blind votes, Claude 3.7 Thinking Sonnet wins 80% of the time. That's not luck.
Claude 3.7 Thinking Sonnet particularly excels in Reasoning. Gemini 2.5 Flash Preview (thinking) is 8.6x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
34× cheaper
Output
$3.50
8.6× cheaper
Gemini 2.5 Flash Preview (thinking) is cheaper on both — 34× input, 8.6× output
Writing DNA
Style Comparison
Similarity
44%
Claude 3.7 Thinking Sonnet uses 180.6x more headings
Claude 3.7 Thinking Sonnet
Gemini 2.5 Flash Preview (thinking)
61%Vocabulary53%
49wSentence Length14w
0.64Hedging0.38
2.2Bold4.4
4.5Lists4.1
0.00Emoji0.00
1.81Headings0.00
0.21Transitions0.24
Based on 21 + 7 text responses
Research
What we learned reading every model
FAQ
