Arena raises $200M Series B at $3.1B valuation after revenue jump
Arena, a crowdsourced AI model-ranking platform that began as a UC Berkeley project, raised $200 million in a Series B at a $3.1 billion valuation. The company said it reached a $100M annualized run rate in June, added an enterprise product called AI Evaluations and launched an "alignment" leaderboard; the round was led by Lightspeed and Khosla with participation from Salesforce Ventures, a16z, Felicis and others.