LMArena

LMArena raises $100M Seed to transform AI model evaluation and community feedback

22nd May, 2025

Chris Davis

Writer

LMArena raises $100M Seed to transform AI model evaluation and community feedback

What does LMArena do?

LMArena offers an open platform that empowers developers, researchers, and users to evaluate and compare AI model outputs through real-world voting and feedback, enhancing the reliability of both proprietary and open-source models.

How much did they raise?

The company secured $100M in a Seed round, with a16z and UC Investments leading the investment and additional participation from Lightspeed, Laude Ventures, Felicis, Kleiner Perkins, and The House Fund.

What are their plans for the money?

LMArena intends to use the funds to expand its operations and business reach, further developing its platform to drive improvements in AI model evaluation and real-world testing, potentially influencing the broader AI industry.

What have they achieved so far?

To date, the platform has conducted over 400 model evaluations and facilitated more than 3 million votes, contributing to performance insights for models from major industry players such as Google, OpenAI, Meta, and xAI.

Key Contacts

Anastasios Angelopoulos
Chief Executive Officer

Company Links

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