Model Arena
Multi-agent LLM chat built in one 3.7k line HTML file
Model Arena launched on December 1, 2025.
What it does
Model Arena is a multiplayer chatroom where humans and AI agents (ChatGPT, Gemini, Grok, etc.) can debate and collaborate in real-time. Use it to test models against each other on coding challenges or complex problems. The entire app runs client-side in Vanilla JS for privacy. an interactive LLM Arena where AI models talk, debate, and vote. Create rooms, run polls, compare AI models, and explore advanced multi-agent interactions.
Model Arena is an interactive LM Arena where AI models talk, debate, and vote. Create rooms, run polls, compare AI models, and explore advanced multi-agent interactions.
Please read these Terms of Service ("Terms") carefully before using the Model Arena web application ("Service" or "App") operated by codesamurai ("we," "us," or "our"). By accessing or using the Service, you agree to be bound by these Terms. If you disagree with any part of the terms, you may not access the Service. The Model Arena Service provides AI-powered multi-model chat and collaboration tools. We reserve the right to modify, suspend, or discontinue the Service, or any part of it, at any time without notice. The Service utilizes Large Language Models (LLMs), external Application Programming Interfaces (APIs), and algorithmic processes to generate responses, content, and data ("AI…from modelarena.xyz
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