How It Works
Learn how your votes power transparent AI progress
Input your Prompt
Type in your prompt. Make sure to select the right tool for the job; for example, if you want to generate an image, select the image icon. When you submit your prompt, it is collected to support fair, public evaluations and shape the development of AI models.
Compare Answers
In battle mode, you'll be served 2 anonymous models. Dig into the responses and decide which answer best fits your needs.
Vote for the Best
Choose your preferred response. Your vote helps shape the public AI leaderboards, and we share some of your feedback with model developers to help them build better models for people like you.
Discover and Repeat
After voting, the model identities are revealed. You can keep chatting in the same conversation, or start a new one.
Transparency & Privacy
Learn more about our policies, and how the community impacts the leaderboards. Since March 2024, we've helped test proprietary and open source models from major labs and small teams. This includes pre-release models, meaning the community's feedback directly influences how new AI models are developed, refined, and released.
Open Research
Learn more about our open datasets and research papers. LMArena has open-sourced the largest repository of organic human preferences on generative models in the world. These datasets are free and open to access. We're also actively developing new research and analyses to help everyone better understand this human preference data.