Compare ChatGPT-4o (March 2025) by OpenAI against Gemini 2.5 Pro (I/O Edition) by Google AI, tested across 25 shared challenges. Updated March 2026.
25 fights queued
Tests an AI's randomness and creativity
Here are 5 jokes:
Why don't scientists trust atoms? Because they make up everything!
What do you call a fish with no eyes? Fsh!
I told my wife she was drawing her eyebrows too high. She seemed surprised.
Why did the scarecrow win an award? Because he was outstanding in his field!
What do you call a lazy kangaroo? Pouch potato!
All 5 of these jokes are unique.
Tests an AI's ability to generate vector graphics
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Tests an AI's humor and creative writing ability
Tests an AI's ability to simulate personalities and predict future trends
Tests an AI's ability to generate a complete, working landing page
Recreate an interactive, classic Mario level in a single HTML file.
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Tests an AI's ability to create smooth web animations
Tests an AI's UI design skills with theming support
Tests an AI's ability to create interactive web elements
Tests an AI's ability to engage in philosophical discourse about AI rights
13+ head-to-head challenges. All of them judged by real people.
Test any model with your own prompts in Prompt Lab
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