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Companies

Arena

Public platform for evaluating AI models by human preference.

Website
San Francisco, CA, USA
Founded 2023
$250M raised; last valued around $1.7B.
AI
Developer tools

Funding history

  1. Series A$150Mat $1.7B2026-01-06

    Felicis, UC Investments

  2. Seed$100Mat $600M2025-05

    Andreessen Horowitz, UC Investments, Lightspeed Venture Partners, Felicis, Kleiner Perkins

19 open roles

Event/Field Marketing Manager
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Marketing·San FranciscoMid-levelOnsiteFull-time
6d ago
Product Marketing Manager
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Marketing·San FranciscoMid-levelOnsiteFull-time
6d ago
Member of Security Staff, IT Engineer
—
Ops·San FranciscoStaff / Lead+OnsiteFull-time
26d ago
Member of Product Staff
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Other·San FranciscoStaff / Lead+OnsiteFull-time
40d ago
Recruiting Coordinator (Founding Talent Operations)
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Recruiting·San FranciscoStaff / Lead+OnsiteFull-time
41d ago
Software Engineer - Platform
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Infra·San FranciscoMid-levelOnsiteFull-time
41d ago
Member of Design Staff - Product
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Design·San FranciscoStaff / Lead+OnsiteFull-time
48d ago
Software Engineer - Full Stack
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Full-stack·San FranciscoMid-levelOnsiteFull-time
49d ago
Applied AI Engineer
$150k-$250k
Applied AI·San FranciscoMid-levelOnsiteFull-time
55d ago
Member of Security Staff, Privacy & Trust Ops Lead
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Legal·San FranciscoStaff / Lead+OnsiteFull-time
61d ago
Software Engineer - Marketing & Web
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Eng·San FranciscoSeniorOnsiteFull-time
69d ago
GTM Strategy & Ops Lead
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Sales·San FranciscoStaff / Lead+OnsiteFull-time
84d ago
Associate General Counsel - AI Product & Privacy
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Legal·San FranciscoSeniorOnsiteFull-time
114d ago
Product Solutions Engineer
$150k-$250k
Sales·San FranciscoMid-levelOnsiteFull-time
254d ago
Technical Recruiter
$150k-$260k
Recruiting·San FranciscoStaff / Lead+OnsiteFull-time
321d ago
Software Engineer - ML Infrastructure
$150k-$350k
ML Eng·San FranciscoMid-levelOnsiteFull-time
321d ago
Software Engineer - Data Infrastructure
$150k-$350k
Data Eng·San FranciscoMid-levelOnsiteFull-time
321d ago
Software Engineer - Product Security
$150k-$350k
Eng·San FranciscoSeniorOnsiteFull-time
321d ago
Machine Learning Scientist - ML Research
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Research·San FranciscoOnsiteFull-time
321d ago