Arena AI (formerly LM Arena) is a platform for chatting with, comparing, and building with the world’s top AI models. Alongside its popular crowd-sourced leaderboard where users vote on blind head-to-head “battles” between models to generate Elo-style rankings – Arena now offers a chat interface that lets you build things like landing pages, dashboards, games, and full-stack apps by prompting different AI models directly. This allows you to directly compare two models results side-by-side, which is super useful for seeing which specific model gives the best output for the task at hand.
