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LMArena secures $100M in seed funding led by a16z and UC Investments to enhance AI model evaluation with a rebuilt platform.

PRIVATEMay 21, 2025

Amount Raised

$100 Million

Round Type

Seed

San FranciscoArtificial IntelligenceMachine Learning

Investors

Andreessen HorowitzFelicisLaude VenturesLightspeedUC InvestmentsKleiner PerkinsThe House Fund

Description

LMArena has secured $100 million in seed funding to improve its open community platform for assessing AI models. This funding, led by a16z and UC Investments, coincides with the upcoming relaunch of the platform, aimed at making AI evaluations more transparent and reliable. Over 400 model evaluations have already been conducted, making significant contributions to both proprietary and open-source AI models. The new platform will include a mobile-first design, lower latency, and additional features to enhance user experience.

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Company Information

Company

LMArena

Location

San Francisco, California, United States

About

LMArena is an open community platform for evaluating AI models, aiming to bring scientific rigor to AI reliability. It provides a neutral, reproducible infrastructure that allows researchers, developers, and users to understand AI model performance in real-world scenarios. With a focus on community-driven science, LMArena facilitates open evaluation and makes AI assessments transparent and reliable. The platform seeks to continuously innovate based on community feedback.

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3 contacts
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