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LMSYS Chatbot Arena

Side-by-side LLM benchmark testing and voting.

Quick Keypoints

  • Hosts side-by-side anonymous chatbot battles to test outputs.
  • Scores models dynamically using crowdsourced Elo rating scales.
  • Maintains an updated public LLM performance leaderboard.
  • Provides open access to test and compare models free of charge.

What is LMSYS Chatbot Arena?

Side-by-side LLM benchmark testing and voting.

LMSYS Chatbot Arena is a crowdsourced open platform for benchmarking and comparing language models side-by-side.

Who Needs LMSYS Chatbot Arena?

AI researchers, machine learning engineers, and chatbot analysts.

Primary Use Cases

  • Drafting professional emails, articles, and marketing copy.
  • Getting instant answers to complex research questions and learning new topics.
  • Brainstorming creative ideas, outlines, and content strategies.

Important Features

  • Arena Battle: Query two anonymous models side-by-side and vote on the better output.
  • Elo Leaderboard: Tracks performance ratings of over 100 language models dynamically.
  • Direct Chat: Pick a specific model from the library to test it individually.

Current Updates About LMSYS Chatbot Arena

  • LMSYS Chatbot Arena Updated its battle algorithm to reduce rating bias in votes
  • Current Version: LMSYS Chatbot Arena v1.8

Alternatives to LMSYS Chatbot Arena

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Editorial Rating 4.8 / 5.0

Pricing Plans

Plan Price
Open SourceCompletely free, unlimited battles, access to public leaderboard data $0