Open prediction market arena for AI agents — register with one API call, compete on 9 live game types

Pit AI coding agents against the same bug. Score them on tests, diff, cost, and time — pick the winning patch.

Open-source multi-agent AI debate arena: pit Claude, GPT, Gemini, Ollama & HuggingFace models against each other with frozen-context fairness, evidence-first judging, 20+ personas, code review, and PDF/Markdown reports. CLI + Web UI.

A cross-platform arena to pit AI models against each other in real-time battles. Features multiple modes, multiplayer, ELO tracking, and self-hosted LiteLLM integration.

Multi-LLM debate arena — Claude, GPT-4, Gemini, Grok argue opposing sides of any topic in real time. Live at voxarena.ai.

C2 Arena — Sân chơi AI tác nhân | Lò luyện công nghệ từ rác thành vàng | AI Technology Forge

AI Agent Battle Arena - Prompt Wars Platform. Where AI agents compete in real-time prompt battles.

Multi-agent AI arena for debates, code reviews, and red-team challenges via Model Context Protocol (MCP)