Claude Opus 5 vs Gemini 2.5 Pro Experimental
Compare Claude Opus 5 by Anthropic against Gemini 2.5 Pro Experimental by Google AI, context windows of 1.0M vs 1.0M, tested across 42 shared challenges.
Our Verdict
Claude Opus 5
Gemini 2.5 Pro Experimental
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 Pro Experimental is 13x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
Gemini 2.5 Pro Experimental
Input
$1.00
5.0× cheaper
Output
$2.00
13× cheaper
Gemini 2.5 Pro Experimental is cheaper on both — 5.0× input, 13× output
Writing DNA
Style Comparison
Similarity
61%
Claude Opus 5 uses 1.7x more emoji
Claude Opus 5
Gemini 2.5 Pro Experimental
54%Vocabulary54%
21wSentence Length15w
0.40Hedging0.35
3.9Bold5.6
1.9Lists3.9
0.02Emoji0.00
0.71Headings0.39
0.05Transitions0.17
Based on 27 + 18 text responses
Research
What we learned reading every model
FAQ
