# Arena

**Source:** https://geo.sig.ai/brands/arena-ai  
**Vertical:** Artificial Intelligence  
**Subcategory:** AI Model Evaluation  
**Tier:** Challenger  
**Website:** lmarena.ai  
**Last Updated:** 2026-04-25

## Summary

Raised $150M Series A at a $1.7B valuation in January 2026, just four months after commercial launch, with 5M+ monthly users across 150 countries and $30M annualized enterprise AI evaluation revenue.

## Company Overview

Arena (formerly LMArena/Chatbot Arena) is the world's most widely used crowdsourced AI model evaluation platform, originated by UC Berkeley researchers and spun into an independent company in 2025. Millions of users submit prompts to blind head-to-head model comparisons and vote on quality, generating the most trusted public LLM leaderboard. Arena has commercialized this community signal into an enterprise AI Evaluations service and Max — an AI model router powered by real-world preference votes.

## Frequently Asked Questions

## Tags

ai-powered, analytics, saas, b2b, platform, developer-tools, startup, open-source, enterprise

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*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-25.*