Arena, the AI leaderboard everyone uses, is now a $100M business

TL;DR

Arena, originating from UC Berkeley, has reached $100 million in annualized run-rate revenue.
The company launched its commercial AI Evaluations service in September, providing performance analytics.
Arena's revenue is based on consumption, not recurring charges.
The AI leaderboard platform is known for its crowdsourced model performance data from over 10 million user evaluations.
Arena competes with human labeling startups like Mercor, Surge, and Scale AI for post-training optimization services.
Arena previously raised $150 million in a Series A round at a $1.7 billion valuation.
The company was co-founded by Anastasios Angelopoulos, Wei-Lin Chiang, and Ion Stoica.
Arena has raised a total of $250 million from investors.

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