ChatGPT-4o (March 2025) vs Gemini 2.5 Pro Experimental

Compare ChatGPT-4o (March 2025) by OpenAI against Gemini 2.5 Pro Experimental by Google AI, in 22 community votes, gemini 2.5 pro experimental wins 77% of head-to-head duels, context windows of 128K vs 1.0M, tested across 32 shared challenges. Updated February 2026.

In 22 community votes, Gemini 2.5 Pro Experimental wins 77% of head-to-head duels. ChatGPT-4o (March 2025) leads in Analysis, while Gemini 2.5 Pro Experimental leads in Web Design, Image Generation, Reasoning. Based on blind community voting from the RIVAL open dataset of 22+ human preference judgments for this pair.