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Arena
AddedJul 8, 2026
UpdatedJul 8, 2026
Arena

Arena

Series A

Arena operates a crowdsourced platform that benchmarks large language models through head-to-head human evaluations.

HQ
Berkeley, CA, US
Founded
2023
Overview
Analysis
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Fundraising
Employees
News
Website

Arena runs an open evaluation platform where human judges compare anonymous model responses side by side, producing a community-driven leaderboard of large language models. Its methodology has become a widely cited reference point for comparing frontier and open-source models, relied on by researchers and AI labs to track relative capability.

Beyond its original chatbot comparisons, the platform added specialized arenas for coding, mathematics, vision, and agentic web tasks. The resulting rankings serve as a frequently cited benchmark across the AI research community.

Arena - Similar Companies

Design Arena logo

Design Arena

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Arena - Quick Facts

Who are Arena's competitors?

Companies similar to Arena include Design Arena, LLM Stats, Parea and Arena.

When was Arena founded?

Arena was founded in 2023.

Where is Arena's headquarters located?

Arena's headquarters is located in Berkeley, CA, US.

When was Arena's last funding round?

Arena's most recent funding round was for $150M (USD) in January 2026.

How much has Arena raised to-date?

As of Jan 6, 2026, Arena has raised a total of $250M (USD).

Arena - Classification

Industry
  • Artificial Intelligence
Technology
  • Machine Learning
Model
  • B2B