Arena hits $100M revenue in 8 months
Arena's model-evaluation business hit $100M annualized revenue eight months after its September 2025 commercial launch, at a $1.7B post-money valuation.
Arena, the company behind the Chatbot Arena leaderboard where users rate model responses in side-by-side comparisons, reported $100 million in annualized run-rate revenue on June 29, reached eight months after launching commercial evaluations in September 2025. The company’s January 2026 Series A valued it at $1.7 billion; total funding is $250 million from investors including Felicis, Andreessen Horowitz, and Kleiner Perkins. The commercial product sells performance analytics to model labs and enterprises across text, coding, vision, image generation, and Agent Mode workflows. CEO Anastasios Angelopoulos noted the revenue is consumption-based rather than subscription, making “ARR” a run-rate figure rather than a committed backlog.