Gemini 2.5 Pro (I/O Edition) vs GPT-4o (Omni)
Compare Gemini 2.5 Pro (I/O Edition) by Google AI against GPT-4o (Omni) by OpenAI, in 15 community votes, gemini 2.5 pro (i/o edition) wins 100% of head-to-head duels, tested across 41 shared challenges. Updated June 2026.
Which is better, Gemini 2.5 Pro (I/O Edition) or GPT-4o (Omni)?
Gemini 2.5 Pro (I/O Edition) is the better choice overall, winning 100% of 15 blind community votes on Rival. Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens vs $2.5/M for GPT-4o (Omni). Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Pro (I/O Edition) and GPT-4o (Omni)
Gemini 2.5 Pro (I/O Edition) is made by google while GPT-4o (Omni) is from openai. On pricing, Gemini 2.5 Pro (I/O Edition) costs $1.25/M input tokens vs $2.5/M for GPT-4o (Omni). In community voting, In 15 community votes, Gemini 2.5 Pro (I/O Edition) wins 100% of head-to-head duels.
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 Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 15+ human preference judgments for this pair.
Per 1M tokens
Pick Gemini 2.5 Pro (I/O Edition). In 15 blind votes, Gemini 2.5 Pro (I/O Edition) wins 100% of the time. That's not luck.
Gemini 2.5 Pro (I/O Edition) particularly excels in Web Design, Image Generation.
Style Comparison
GPT-4o (Omni) uses 2.5x more emoji
