Arena Raises $200M, Valuation Nearly Doubles to $3.1B
Arena, the crowdsourced AI leaderboard that began as an academic experiment, is now worth $3.1 billion. The company announced on Thursday that it has closed a $200 million Series B round. Series B is the second major institutional funding stage for a startup, usually raised once a business is showing real traction.
The new valuation comes roughly 10 months after Arena's previous raise, and it nearly doubles that earlier figure.
From Berkeley project to billion-dollar business
Arena started in 2023 as a research project at UC Berkeley. The idea was simple: ask ordinary people to compare AI models and use their votes to build a ranking. That approach still sits at the center of the platform today.