Arena
Arena.ai is an AI evaluation platform that helps frontier AI labs and enterprises measure, benchmark, and improve AI models using real-world human feedback. The company operates one of the world's largest AI evaluation platforms, powering public leaderboards and enterprise products for evaluating language models, multimodal systems, and AI agents. Arena.ai enables organizations to make better AI decisions through large-scale human preference data and real-world performance measurement.
Funding
Every round, secondary, debt facility or acquisition involving Arena that AI Lounge tracks, newest first. Latest: Series A on Jan 6, 2026.
Timeline · 3
In the news
Arena, the LMArena leaderboard company, raises $200M Series B at $3.1B valuationArena raises $150M Series A at $1.7B for crowd-sourced model evaluation
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