LMArena raised $150 million in Series A funding at a $1.7 billion valuation, nearly tripling its worth in eight months on the back of surging demand for trustworthy AI model evaluation infrastructure.

The UC Berkeley research project turned commercial platform addresses a critical enterprise bottleneck: how do you know which AI model actually performs best for your specific use case? While lab benchmarks show theoretical capabilities, LMArena’s community of 5+ million monthly users provides real-world performance data that enterprises need for deployment confidence.