technology
AI leaderboard company reaches $100 million annualized revenue
Arena, which began as a UC Berkeley research project in 2023, reported $100 million in annualized run-rate revenue eight months after launching paid services. The company offers paid performance analytics drawn from its crowdsourced model evaluations.
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Arena, an AI model evaluation platform that started as a UC Berkeley research project in 2023, reached $100 million in annualized run-rate revenue eight months after introducing commercial services. The company generates the revenue through AI Evaluations, a paid offering that supplies model labs and enterprises with detailed performance data collected from its community of users.
Its free public leaderboard ranks models across text, coding, vision, image generation, and agent workflows using more than 10 million user-submitted comparisons.
Revenue model Arena charges customers on a consumption basis rather than recurring subscriptions. The company raised a $150 million Series A in January at a $1.7 billion post-money valuation, when its annualized revenue stood at $30 million. It has raised a total of $250 million from investors including Felicis, Andreessen Horowitz, The House Fund, LDVP, Kleiner Perkins, Lightspeed Venture Partners, Laude Ventures, and UC Investments.
Competitive landscape Arena competes for customer spending with human labeling firms such as Mercor, Surge, and Scale AI. Other crowdsourced evaluation startups have reported rapid revenue growth, with Handshake reaching nearly $1 billion and Mercor exceeding $1 billion in annualized revenue earlier this year.
The company was incorporated in April 2025. Its consumer site presents users with prompts sent to two models and records which output they prefer.
