Join for free

Arena

Backed by

Logo of Kleiner Perkins
Logo of Kleiner Perkins
Logo of Kleiner Perkins
Logo of Felicis
Logo of Kleiner Perkins

Visit Website

Visit Website

View Jobs

View Jobs

Raised $150M Series A on January 6, 2026

Raised $150M Series A on January 6, 2026

Created by researchers from UC Berkeley, Arena (formerly LMArena) is a community-powered platform to measure and advance the frontier of AI for real-world use. Tens of millions of builders, researchers, and creative professionals come to Arena to use frontier models and give feedback on their responses, shaping a public leaderboard grounded in real-world use.

San Francisco, United States

·

$150M Series A

·

AI

·

Onsite

·

51–200

Data Scientist - ML Research

Bay Area · Aug 31, 2026

Software Engineer, Marketing & Web

Bay Area · Aug 27, 2026

GTM Strategy & Ops Lead

Bay Area · Aug 12, 2026

Business Development

Bay Area · Aug 12, 2026

Infrastructure Engineer

Bay Area · Jul 19, 2026

Site Reliability Engineer (SRE)

Bay Area · Jul 16, 2026

Backend Engineer

Bay Area · Jul 16, 2026

Associate General Counsel - AI Product & Privacy

Bay Area · Jul 13, 2026

People Operations Lead

Bay Area · Jun 8, 2026

Software Engineer, Anti-Abuse

Bay Area · Apr 22, 2026

Senior Software Engineer, Product

Bay Area · Apr 20, 2026

Product Solutions Engineer

Bay Area · Feb 23, 2026

Explore similar companies to Arena

Artificial Societies

AI simulations of societies.

AI · Seed · Onsite · Based in London

Sapien

AI coworker for CFOs.

AI · Series A · Onsite · Based in New York

Gimlet Labs

Applied AI research lab.

AI · Series B · Onsite · Based in San Francisco

Town

The unusually helpful AI assistant.

AI · Series A · Onsite · Based in San Francisco

Nomic AI

Building domain-specific AI.

AI · Series A · Onsite · Based in New York

Wonderful

Enterprise agent platform.

AI · Series C · Remote · Based in Amsterdam

Keycard

Unified identity infra for AI agents.

AI · Series A · Remote · Based in Halifax

AfterQuery

Expert data for frontier AI.

AI · Series A · Remote · Based in San Francisco

Wafer

Continual inference.

AI · Series A · Onsite · Based in San Francisco

Artificial Societies

AI simulations of societies.

AI · Seed · Onsite · Based in London

Sapien

AI coworker for CFOs.

AI · Series A · Onsite · Based in New York

Gimlet Labs

Applied AI research lab.

AI · Series B · Onsite · Based in San Francisco

Town

The unusually helpful AI assistant.

AI · Series A · Onsite · Based in San Francisco

Nomic AI

Building domain-specific AI.

AI · Series A · Onsite · Based in New York

Wonderful

Enterprise agent platform.

AI · Series C · Remote · Based in Amsterdam

Keycard

Unified identity infra for AI agents.

AI · Series A · Remote · Based in Halifax

AfterQuery

Expert data for frontier AI.

AI · Series A · Remote · Based in San Francisco

Work Type

Remote

Onsite

Hybrid

Stages

Bootstrapped

Pre-Seed

Seed

Series A

Series B

Series C

Series D

Series E

Venture

Industries

Aerospace

AI

Analytics

Biotech

Climate

Construction

Consumer

Cybersecurity

Design

DevTools

Education

Energy

Fintech

See all Industries

Investors

Wellington

Asymmetric Capital

Peak 6

Jane Street

Disruptive

Five V Capital

Parkway VC

Will Ventures

Coreline Ventures

redalpine

Sixth Street

Prime Movers Lab

Halo Fund

See all Investors

Cities

Chicago

Los Angeles

New York

Philadelphia

Austin

Boston

Dallas

Denver

Portland

San Diego

San Francisco

San Jose

Seattle

Washington, DC

Countries

Armenia

Australia

Canada

Denmark

France

Germany

Hungary

India

Ireland

Israel

Netherlands

Singapore

Spain

Sweden

About · Sponsor · Submit ↗

Crafted by Louis and Gonzalo

Explore

Jobs

News