LMArena is now Arena

A global community of millions brought real-world prompts, expert judgment, new modalities, and diverse ways of working with AI. What started as an academic research project at UC Berkeley evolved into a global platform for evaluating how AI actually performs in practice. We’re excited to share today our new look and feel to match our scientific mission: to measure and advance the frontier of AI for real-world use.

That evolution is why we are now Arena. Now available at: arena.ai.

Animation by Fern Studio

Our Arena is a transparent, shared space. It is where frontier AI capabilities are tested, compared, and shaped by human judgement. Every day, people use Arena to stress-test models with real tasks—writing, coding, reasoning, designing, searching, and creating. Those interactions generate signals of real-world utility that no static benchmark can capture on its own.

When we developed Chatbot Arena three years ago, we coined the term “Arena” for a place where models compete to be judged by real users. Now that our platform has become the de facto Arena, we have outgrown the “LM,” and it’s time to drop it.

We worked closely with our friends at Alright Studio to craft the visual identity and strategy for our new brand. When we started on this journey, we had a very strong idea of how we wanted our brand to feel: trustworthy, precise, academic, and prestigious. Having started with Chatbot Arena, we wanted to really own the concept that we created. Alright helped us translate those concepts into a cohesive, unique brand that encompasses everything we are in a way that feels uniquely us.

The pillar represents the pedestal on which we place progress, the foundational role of evaluations, and the platform we are building for our growing community. After exploring dozens of potential logos, we landed on a mark that symbolizes the Arena without the complexity of showing an entire coliseum. Our new logo was intentionally crafted to feel premium, technical, and strongly rooted in trust.