GPT-4o (Omni) vs Gemini 2.5 Pro (I/O Edition)

Compare GPT-4o (Omni) by OpenAI against Gemini 2.5 Pro (I/O Edition) by Google AI, in 15 community votes, gemini 2.5 pro (i/o edition) wins 100% of head-to-head duels, tested across 34 shared challenges. Updated February 2026.

In 15 community votes, Gemini 2.5 Pro (I/O Edition) wins 100% of head-to-head duels. Gemini 2.5 Pro (I/O Edition) leads in Image Generation, Web Design. Based on blind community voting from the RIVAL open dataset of 15+ human preference judgments for this pair.

Image Generation: Gemini 2.5 Pro (I/O Edition) wins 100% of votes
Web Design: Gemini 2.5 Pro (I/O Edition) wins 100% of votes
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