FundedIQ
Analytics

Arena: Funding, Investors & Team (Oct 2026)

Arena is an AI evaluation platform that benchmarks AI models and agents using real-world human feedback

arena.ai LinkedIn San Francisco, United States 51-100 employees Founded 2025
Total raised
$200M
Rounds
1
Latest
Series B
Oct 2026

Arena has raised $200M across 1 funding round on record, the most recent a Series B of $200M announced in Oct 2026.

That round is above the $7.6M median round size for United States companies tracked on FundedIQ over the last two years.

Arena Company Profile and Key Stats

Total funding raised
$200M
across 1 round on record
Funding rounds on record
1
Latest funding round
Series B
$200M in Oct 2026
Employees
51-100
reported band
Founded
2025
Headquarters
San Francisco, United States
Investors on record
14
5 named below

Latest funding round on record: Oct 2026.

Arena Funding Rounds

Date
Round
Amount
Series B
$200M

Arena Investors

Andreessen Horowitz Khosla Ventures Lightspeed Venture Partners Salesforce Ventures Kleiner Perkins

14 investors are recorded in total; the 5 named above are those the record identifies.

Arena Founders and Leadership Team

Name
Role
Contact
Wei-Lin Chiang
Cofounder, CTO
Locked

Contact details for the Arena team: 1 of 1 has an email address on file, 1 has a LinkedIn profile.

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Arena Funding in Context

Segment
Companies
Median round
30,234
$7.6M
4,401
$31M

Arena's latest round of $200M is above the median round in United States. Medians cover the last 24 months of disclosed rounds.

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Arena Funding FAQs

What does Arena do?

Arena is an AI evaluation platform that benchmarks AI models and agents using real-world human feedback

How much funding has Arena raised?

Arena has raised $200M across 1 round on record. The most recent is a Series B of $200M announced in Oct 2026.

When did Arena last raise funding?

Arena's most recent funding round on record is a Series B of $200M, announced in Oct 2026.

Who has invested in Arena?

Investors on record for Arena include Andreessen Horowitz, Khosla Ventures, Lightspeed Venture Partners, Salesforce Ventures, Kleiner Perkins. FundedIQ records 14 investors in total.

Who founded Arena?

FundedIQ lists Wei-Lin Chiang (Cofounder, CTO) at Arena.

Where is Arena headquartered?

Arena is based in San Francisco, United States.

How many employees does Arena have?

Arena is in the 51-100 employee band.

When was Arena founded?

Arena was founded in 2025.

About FundedIQ's Arena Funding Data

FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.

Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Arena is left off this page rather than filled in.

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