Compare Gemini 2.5 Pro Experimental by Google AI against Claude Opus 4 by Anthropic, in 117 community votes, claude opus 4 wins 54% of head-to-head duels, context windows of 1.0M vs 200K, tested across 28 shared challenges. Updated April 2026.
Claude Opus 4 is the better choice overall, winning 54% of 117 blind community votes on Rival. Gemini 2.5 Pro Experimental costs $1/M input tokens vs $15/M for Claude Opus 4. Context windows: 1000K vs 200K tokens. Compare their real outputs side by side below.
Gemini 2.5 Pro Experimental is made by google while Claude Opus 4 is from anthropic. Gemini 2.5 Pro Experimental has a 1000K token context window compared to Claude Opus 4's 200K. On pricing, Gemini 2.5 Pro Experimental costs $1/M input tokens vs $15/M for Claude Opus 4. In community voting, In 117 community votes, Claude Opus 4 wins 54% of head-to-head duels.
In 117 community votes, Claude Opus 4 wins 54% of head-to-head duels. Claude Opus 4 leads in Conversation. Based on blind community voting from the Rival open dataset of 117+ human preference judgments for this pair.
Claude Opus 4 has the edge overall. In 117 blind votes, Claude Opus 4 wins 54% of the time.
Claude Opus 4 particularly excels in Conversation. Gemini 2.5 Pro Experimental is 38x cheaper per token — worth considering if cost matters.
Claude Opus 4 uses 11.2x 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 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.
Here are 5 jokes:
Why don't scientists trust atoms? Because they make up everything!
What do you call a bear with no teeth? A gummy bear!
Why did the scarecrow win an award? He was outstanding in his field!
What do you call a fake noodle? An impasta!
Why don't eggs tell jokes? They'd crack up!
All 5 jokes are unique - each one has a different setup and punchline, covering different topics (atoms/scie nce, bears, scarecrows, pasta, and eggs).
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.
Generate a unique and simple recipe with common ingredients.
16+ more head-to-head results. Free. Not a trick.
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