Claude 3.7 Sonnet vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare Claude 3.7 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 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 4.3x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Sonnet
Input
$3.00
Output
$15.00
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
20× cheaper
Output
$3.50
4.3× cheaper
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper on both — 20× input, 4.3× output
Writing DNA
Style Comparison
Similarity
50%
Claude 3.7 Sonnet uses 98.9x more hedging
Claude 3.7 Sonnet
Gemini 2.5 Flash Preview 05-20 (thinking)
62%Vocabulary70%
35wSentence Length11w
0.99Hedging0.00
1.2Bold4.2
4.3Lists7.3
0.00Emoji0.00
1.78Headings0.00
0.23Transitions0.00
Based on 13 + 3 text responses
Research
What we learned reading every model
FAQ
