Arena AI

Arena AI is a crowdsourced AI evaluation and productivity platform created by researchers from UC Berkeley. Originally known as Chatbot Arena and later LMArena, it enables users to compare responses from anonymous AI models, vote on the better output, and contribute to public AI leaderboards based on real-world human preferences. Beyond benchmarking, Arena now provides Direct Chat, Image Arena, Video Arena, Code Arena, and Agent Mode, allowing users to build apps, perform research, generate images and videos, and complete complex workflows using multiple frontier AI models. Arena AI is officially available worldwide, including India, the United States, Europe, Australia, and most supported regions. There are no officially documented country restrictions, although availability of certain premium models depends on agreements with AI providers.