Compare Claude Sonnet 4 by Anthropic against Gemini 2.5 Pro Experimental by Google AI, in 28 community votes, gemini 2.5 pro experimental wins 56% of head-to-head duels, context windows of 200K vs 1.0M, tested across 28 shared challenges. Updated April 2026.
Gemini 2.5 Pro Experimental is the better choice overall, winning 56% of 28 blind community votes on Rival. Claude Sonnet 4 costs $3/M input tokens vs $1/M for Gemini 2.5 Pro Experimental. Context windows: 200K vs 1000K tokens. Compare their real outputs side by side below.
Claude Sonnet 4 is made by anthropic while Gemini 2.5 Pro Experimental is from google. Claude Sonnet 4 has a 200K token context window compared to Gemini 2.5 Pro Experimental's 1000K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $1/M for Gemini 2.5 Pro Experimental. In community voting, In 28 community votes, Gemini 2.5 Pro Experimental wins 56% of head-to-head duels.
In 28 community votes, Gemini 2.5 Pro Experimental wins 56% of head-to-head duels. Claude Sonnet 4 leads in Image Generation, while Gemini 2.5 Pro Experimental leads in Web Design. Based on blind community voting from the Rival open dataset of 28+ human preference judgments for this pair.
Gemini 2.5 Pro Experimental has the edge overall. In 28 blind votes, Gemini 2.5 Pro Experimental wins 56% of the time.
Pick Claude Sonnet 4 for Image Generation. Pick Gemini 2.5 Pro Experimental for Web Design. Gemini 2.5 Pro Experimental is 7.5x cheaper per token — worth considering if cost matters.
Claude Sonnet 4 uses 87.9x more emoji
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
28 fights queued
Tests an AI's understanding of number representation
No, 9.11 is not greater than 9.9.
To compare these decimal numbers:
Since both numbers have the same whole number part (9), we compare the decimal parts:
Therefore, 9.9 is greater than 9.11.
No, 9.11 is not greater than 9.9.
Here's how to compare them:
Therefore, 9.9 is greater than 9.11.
Tests an AI's randomness and creativity
Okay, here are 5 jokes:
Why don't scientists trust atoms? Because they make up everything!
I told my wife she was drawing her eyebrows too high. She looked surprised.
What do you call a lazy kangaroo? Pouch potato!
Want to hear a joke about construction? I'm still working on it.
Why did the scarecrow win an award? Because he was outstanding in his field!
How many are unique? All 5 of the jokes generated above are unique from each other.
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
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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 interactive web elements
Tests an AI's ability to create a detailed world map in SVG format
Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
16+ more head-to-head results. Free. Not a trick.
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