Claude 3 Opus vs Gemini 2.5 Flash Preview
Compare Claude 3 Opus by Anthropic against Gemini 2.5 Flash Preview by Google AI, context windows of 200K vs 1.0M, tested across 10 shared challenges.
Our Verdict
Claude 3 Opus
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 125x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Opus
Input
$15.00
Output
$75.00
Gemini 2.5 Flash Preview
Input
$0.15
100× cheaper
Output
$0.60
125× cheaper
Gemini 2.5 Flash Preview is cheaper on both — 100× input, 125× output
Writing DNA
Style Comparison
Similarity
74%
Gemini 2.5 Flash Preview uses 407.5x more bold
Claude 3 Opus
Gemini 2.5 Flash Preview
54%Vocabulary51%
14wSentence Length15w
0.48Hedging0.70
0.0Bold4.1
3.0Lists3.3
0.00Emoji0.00
0.00Headings0.09
0.06Transitions0.24
Based on 3 + 12 text responses
Research
What we learned reading every model
FAQ
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