Type a prompt, compare two anonymous answers side-by-side, then vote for the response you prefer.
1) Enter a prompt
Use a suggestion button or write your own prompt in the input. When you submit, you start a new head-to-head comparison.
2) Compare answers
You'll see two responses from anonymous models. Read both and judge quality, style, and correctness.
3) Vote
Pick the better response. Votes help evaluate models across topics and languages and can inform future model improvements.
4) Reveal and keep going
After you vote, the model names are revealed. You can continue chatting in the same thread or start a new comparison with a fresh prompt.
Transparency & privacy
We aim to keep the process transparent while respecting user privacy. Review the Terms and Privacy pages for details about data handling and usage.