Claude Opus 4 vs Gemini 2.5 Pro (I/O Edition)

Compare Claude Opus 4 by Anthropic against Gemini 2.5 Pro (I/O Edition) by Google AI, in 45 community votes, claude opus 4 and gemini 2.5 pro (i/o edition) are closely matched, tested across 27 shared challenges. Updated February 2026.

In 45 community votes, Claude Opus 4 and Gemini 2.5 Pro (I/O Edition) are closely matched. Claude Opus 4 leads in Web Design, Conversation, while Gemini 2.5 Pro (I/O Edition) leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 45+ human preference judgments for this pair.

Web Design: Claude Opus 4 wins 63% of votes
Image Generation: Gemini 2.5 Pro (I/O Edition) wins 86% of votes
Conversation: Claude Opus 4 wins 100% of votes
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