Anonymous LLM arena with crowdsourced blind-test leaderboard
Introduction
LMArena (formerly Chatbot Arena) is the anonymous LLM battleground: blind side-by-side battles with community votes produce its leaderboard — widely seen as the benchmark closest to real-world experience. Checking the Arena board before choosing a model is now industry habit, and anyone can try flagship models here for free.
Key Features
- Anonymous blind-test battles
- Community-vote-driven leaderboard
- Free access to flagship models
- Category boards (coding, long-context, creative)
- Open evaluation datasets
Pros
- The most trusted public benchmark
- A great way to try flagship models free
Cons
- Board reflects preference, not absolute capability
Pricing
Free to use.（See official site for current pricing）
FAQ
How to read the leaderboard?
Look at Elo scores with confidence intervals, plus the category board you care about.
Is the data reliable?
Millions of real votes, widely cited in academia.
Registration needed?
Battles are anonymous; some features need login.
Related Sites
Collected on lucifer.city · Reviewed by the founder