Claude Opus 4.6 vs Gemini 2.5 Pro (I/O Edition)

Compare Claude Opus 4.6 by Anthropic against Gemini 2.5 Pro (I/O Edition) by Google AI, in 1 community votes, claude opus 4.6 and gemini 2.5 pro (i/o edition) are closely matched, tested across 34 shared challenges. Updated April 2026.

Which is better, Claude Opus 4.6 or Gemini 2.5 Pro (I/O Edition)?

Claude Opus 4.6 and Gemini 2.5 Pro (I/O Edition) are closely matched based on 1 community votes. Claude Opus 4.6 costs $5/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition). Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.6 and Gemini 2.5 Pro (I/O Edition)

Claude Opus 4.6 is made by anthropic while Gemini 2.5 Pro (I/O Edition) is from google. On pricing, Claude Opus 4.6 costs $5/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition). In community voting, In 1 community votes, Claude Opus 4.6 and Gemini 2.5 Pro (I/O Edition) are closely matched.

In 1 community votes, Claude Opus 4.6 and Gemini 2.5 Pro (I/O Edition) are closely matched. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
Claude Opus 4.6
Claude Opus 4.6Winner
Gemini 2.5 Pro (I/O Edition)
Gemini 2.5 Pro (I/O Edition)Runner-up

Votes are tied. Claude Opus 4.6 is newer and likely incorporates more recent improvements.

Too close to call
Writing DNA

Style Comparison

Similarity
96%

Claude Opus 4.6 uses 20.7x more emoji

Claude Opus 4.6
Gemini 2.5 Pro (I/O Edition)
53%Vocabulary58%
35wSentence Length16w
0.68Hedging0.38
5.2Bold5.8
2.9Lists5.0
0.21Emoji0.00
1.34Headings0.63
0.03Transitions0.01
Based on 23 + 16 text responses
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Claude Opus 4.6Gemini 2.5 Pro (I/O Edition)

279 AI models invented the same fake scientist.

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