Claude 3.7 Thinking Sonnet vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare Claude 3.7 Thinking Sonnet by Anthropic against Gemini 2.5 Flash Preview 05-20 (thinking) by Google AI, context windows of 200K vs 1.0M, tested across 12 shared challenges.
Our Verdict
Claude 3.7 Thinking Sonnet
Gemini 2.5 Flash Preview 05-20 (thinking)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.5 Flash Preview 05-20 (thinking) is 8.6x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
40× cheaper
Output
$3.50
8.6× cheaper
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both — 40× input, 8.6× output
Writing DNA
Style Comparison
Similarity
45%
Claude 3.7 Thinking Sonnet uses 63.7x more hedging
Claude 3.7 Thinking Sonnet
Gemini 2.5 Flash Preview 05-20 (thinking)
61%Vocabulary70%
49wSentence Length11w
0.64Hedging0.00
2.2Bold4.2
4.5Lists7.3
0.00Emoji0.00
1.81Headings0.00
0.21Transitions0.00
Based on 21 + 3 text responses
Research
What we learned reading every model
FAQ
