LMArena
LMArena is an artificial intelligence company in San Francisco, United States, founded in 2024. It has raised $100.0M across 1 round, most recently a $100.0M Seed in May 2025.
Arena | Benchmark & Compare the Best AI Models
- Headquarters
- San Francisco, California
- Employees
- 11–50
- Founded
- 2024
- Business Model
- B2B
- Website
- arena.ai
- Total Funding
- $100.0M
- Last Round
- $100.0M SeedMay 2025
- Rounds
- 1
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 1 funding round for this company. The full record is or through the API.
About
Originally launched as a UC Berkeley research project, LMArena (now Arena) is a crowdsourced AI evaluation platform where millions of users test and vote on AI model responses across text, code, image, and video modalities. It hosts the de facto public LLM leaderboard used by researchers and enterprises to measure real-world model performance.
Summary
It lists 11–50 employees. It has raised $100.0M in total across 1 round, most recently a $100.0M Seed round in May 2025.
Tech & App Stack
4 technologies & apps tracked
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Funding History
May 2025
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