Claude 3 Opus vs Gemini 3.1 Pro Preview
Compare Claude 3 Opus by Anthropic against Gemini 3.1 Pro Preview by Google AI, context windows of 200K vs 1.0M, tested across 12 shared challenges.
Our Verdict
Gemini 3.1 Pro Preview
Claude 3 OpusRunner-up
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — newer, bigger context window.
Gemini 3.1 Pro Preview is 6.3x 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 3.1 Pro Preview
Input
$2.00
7.5× cheaper
Output
$12.00
6.3× cheaper
Gemini 3.1 Pro Preview is cheaper on both — 7.5× input, 6.3× output
Writing DNA
Style Comparison
Similarity
67%
Gemini 3.1 Pro Preview uses 487.7x more bold
Claude 3 Opus
Gemini 3.1 Pro Preview
54%Vocabulary54%
14wSentence Length18w
0.48Hedging0.29
0.0Bold4.9
3.0Lists3.3
0.00Emoji0.00
0.00Headings0.72
0.06Transitions0.14
Based on 3 + 23 text responses
Research
What we learned reading every model
FAQ
