LMArena is an open platform designed to enable users to access, explore, and interact with leading AI models. Created by researchers from UC Berkeley’s SkyLab, LMArena fosters a community-centric approach to evaluating AI performance by allowing users to compare models side by side and cast votes on their outputs. This process contributes to a public leaderboard that enhances transparency in AI development and ensures that advancements are grounded in real-world applications. With a mission to promote safe and aligned AI systems, LMArena serves over one million monthly users, including organizations like Google, OpenAI, and Meta. The company values transparency, trust, and community impact, making it a dynamic environment for professionals passionate about shaping the future of AI through collaborative evaluation practices.