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 April 2026.

Which is better, ChatGPT-4o (March 2025) or Gemini 2.5 Pro Experimental?

Gemini 2.5 Pro Experimental is the better choice overall, winning 77% of 22 blind community votes on Rival. ChatGPT-4o (March 2025) costs $5/M input tokens vs $1/M for Gemini 2.5 Pro Experimental. Context windows: 128K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between ChatGPT-4o (March 2025) and Gemini 2.5 Pro Experimental

ChatGPT-4o (March 2025) is made by openai while Gemini 2.5 Pro Experimental is from google. ChatGPT-4o (March 2025) has a 128K token context window compared to Gemini 2.5 Pro Experimental's 1000K. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $1/M for Gemini 2.5 Pro Experimental. In community voting, In 22 community votes, Gemini 2.5 Pro Experimental wins 77% of head-to-head duels.

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.

Web Design: Gemini 2.5 Pro Experimental wins 86% of votes
Image Generation: Gemini 2.5 Pro Experimental wins 100% of votes
Analysis: ChatGPT-4o (March 2025) wins 100% of votes
Reasoning: Gemini 2.5 Pro Experimental wins 100% of votes
Our Verdict
Gemini 2.5 Pro Experimental
Gemini 2.5 Pro ExperimentalWinner
ChatGPT-4o (March 2025)
ChatGPT-4o (March 2025)Runner-up

Pick Gemini 2.5 Pro Experimental. In 22 blind votes, Gemini 2.5 Pro Experimental wins 77% of the time. That's not luck.

Pick ChatGPT-4o (March 2025) for Analysis. Pick Gemini 2.5 Pro Experimental for Image Generation, Reasoning, Web Design. Gemini 2.5 Pro Experimental is 7.5x cheaper per token — worth considering if cost matters.

Clear winner
Writing DNA

Style Comparison

Similarity
88%

ChatGPT-4o (March 2025) uses 94.5x more emoji

ChatGPT-4o (March 2025)
Gemini 2.5 Pro Experimental
55%Vocabulary54%
24wSentence Length15w
0.52Hedging0.35
3.3Bold5.6
6.0Lists3.9
0.94Emoji0.00
0.63Headings0.39
0.05Transitions0.17
Based on 15 + 18 text responses
vs

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

279 AI models invented the same fake scientist.

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