Claude Sonnet 4 vs Gemini 2.0 Flash Thinking
Compare Claude Sonnet 4 by Anthropic against Gemini 2.0 Flash Thinking by Google AI, context windows of 200K vs 500K, tested across 21 shared challenges.
Our Verdict
Claude Sonnet 4
Gemini 2.0 Flash Thinking
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Gemini 2.0 Flash Thinking is 30x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
Gemini 2.0 Flash Thinking
Input
$0.25
12× cheaper
Output
$0.50
30× cheaper
Gemini 2.0 Flash Thinking is cheaper on both — 12× input, 30× output
Writing DNA
Style Comparison
Similarity
38%
Claude Sonnet 4 uses 87.9x more emoji
Claude Sonnet 4
Gemini 2.0 Flash Thinking
62%Vocabulary54%
111wSentence Length15w
0.40Hedging0.64
5.0Bold3.8
9.3Lists2.4
0.88Emoji0.00
2.16Headings0.03
0.33Transitions0.30
Based on 17 + 13 text responses
Research
What we learned reading every model
FAQ
