Arena Raises $200M to Scale AI Model Alignment Evaluation

Arena Intelligence, the company behind the widely cited Arena AI leaderboard that ranks language models, has raised $200 million in Series B funding at a $3.1 billion valuation, led by Lightspeed Venture Partners and Khosla Ventures. The funding reflects growing enterprise demand for independent evaluation of AI systems, particularly as model providers face scrutiny over benchmark integrity and real-world safety.