The startup, which runs a popular free AI leaderboard, launched its commercial service just last September.

Arena, the crowdsourced AI leaderboard used by every major lab, has reached 100 million dollars in annualized revenue from its paid evaluation service.

Arena hit a $100M annual revenue run rate eight months after launching AI Evaluations, backed by a $1.7B valuation and $150M Series A round.

The startup, which runs a popular free AI leaderboard, launched its commercial service just last September.