Claude 3.7 Thinking Sonnet vs Gemini 2.5 Flash Preview
Compare Claude 3.7 Thinking Sonnet by Anthropic against Gemini 2.5 Flash Preview by Google AI, context windows of 200K vs 1.0M, tested across 27 shared challenges.
Our Verdict
Claude 3.7 Thinking Sonnet
Gemini 2.5 Flash Preview
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 is 50x 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
Input
$0.15
40× cheaper
Output
$0.60
50× cheaper
Gemini 2.5 Flash Preview is cheaper on both — 40× input, 50× output
Writing DNA
Style Comparison
Similarity
46%
Claude 3.7 Thinking Sonnet uses 20.4x more headings
Claude 3.7 Thinking Sonnet
Gemini 2.5 Flash Preview
61%Vocabulary51%
49wSentence Length15w
0.64Hedging0.70
2.2Bold4.1
4.5Lists3.3
0.00Emoji0.00
1.81Headings0.09
0.21Transitions0.24
Based on 21 + 12 text responses
Research
What we learned reading every model
FAQ
