Arena is free to use, but you need to create an account before you can do much with it.

How long does Arena take?

One quick round, then you can leave. We file it under "A minute" — two anonymous models answer, you pick the winner.

Does Arena work on a phone?

Yes. Arena works on a phone as well as it does on a laptop.

AI Playground

Arena

Two anonymous models answer, you pick the winner

Visit arena.ai More AI Playground

arena.ai

A minute · Works anywhere

Free, sign-up needed · online since 2023

What Arena actually is

Send one prompt and two unnamed models reply side by side. You vote for the better answer, the names are revealed afterwards, and aggregated votes feed a public leaderboard. Formerly LMArena, it stays the least gameable ranking around because the judging is blind.

Why it is worth your time

Voting blind and then seeing which model you actually preferred tends to contradict whatever you assumed from the leaderboard.

Common questions

Is Arena free?: Arena is free to use, but you need to create an account before you can do much with it.
How long does Arena take?: One quick round, then you can leave. We file it under "A minute" — two anonymous models answer, you pick the winner.
Does Arena work on a phone?: Yes. Arena works on a phone as well as it does on a laptop.
What kind of site is Arena?: We list it under AI Playground — machine learning you can poke at. Voting blind and then seeing which model you actually preferred tends to contradict whatever you assumed from the leaderboard.

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AI Playground

Arena

Two anonymous models answer, you pick the winner

Visit arena.ai More AI Playground

arena.ai

A minute · Works anywhere

Free, sign-up needed · online since 2023

What Arena actually is

Why it is worth your time

Voting blind and then seeing which model you actually preferred tends to contradict whatever you assumed from the leaderboard.

Common questions

Is Arena free?: Arena is free to use, but you need to create an account before you can do much with it.
How long does Arena take?: One quick round, then you can leave. We file it under "A minute" — two anonymous models answer, you pick the winner.
Does Arena work on a phone?: Yes. Arena works on a phone as well as it does on a laptop.
What kind of site is Arena?: We list it under AI Playground — machine learning you can poke at. Voting blind and then seeing which model you actually preferred tends to contradict whatever you assumed from the leaderboard.