# LMArena

Open platform for evaluating AI through human preferences.

An open platform for evaluating AI through human preference

Canonical: https://uniquebase.ai/companies/lmarena
Stable identifier: UB-C3978
Snapshot captured: 2026-10-15T14:23:27.067Z
English updated: 2026-10-15T20:25:35.730Z

## Funding

Listed 3 records.
Latest: $200M (Series B), 2026-10-09.

- 2026-10-09 · $200M · Series B · https://techcrunch.com/2026/10/08/popular-ai-leaderboard-arena-nearly-doubles-valuation-to-3-1b-valuation-in-10-months/
  > On October 9, 2026, per TechCrunch, LMArena raised a $200M Series B at a $3.1B valuation. (translated source brief)
- 2026-01-07 · $150M · Andreessen Horowitz, Felicis, Kleiner Perkins, Lauderdale Ventures, LDVP, Lightspeed Venture Partners, The House Fund, University of California Investments · https://x.com/ml_angelopoulos/status/2008577473450250441
  > On 2026/1/7, X reported that AI model evaluation platform LMArena raised USD 150 million at a USD 1.7 billion valuation and reached USD 30 million in ARR. The company did not disclose the specific investors. (translated source brief)
- 2025-05-23 · $100M · Seed · Andreessen Horowitz, Felicis, Kleiner Perkins, Laude Ventures, Lightspeed Venture Partners, The House Fund, UC Investments

## Valuation

Listed 3 records.
Latest: $3.1B (Series B), 2026-10-09.

- 2026-10-09 · $3.1B · Series B · https://techcrunch.com/2026/10/08/popular-ai-leaderboard-arena-nearly-doubles-valuation-to-3-1b-valuation-in-10-months/
  > On October 9, 2026, per TechCrunch, LMArena raised a $200M Series B at a $3.1B valuation. (translated source brief)
- 2026-01-07 · $1.7B · Andreessen Horowitz, Felicis, Kleiner Perkins, Lauderdale Ventures, LDVP, Lightspeed Venture Partners, The House Fund, University of California Investments · https://x.com/ml_angelopoulos/status/2008577473450250441
  > On 2026/1/7, X reported that AI model evaluation platform LMArena raised USD 150 million at a USD 1.7 billion valuation and reached USD 30 million in ARR. The company did not disclose the specific investors. (translated source brief)
- 2025-05-23 · amount unavailable · Seed · Andreessen Horowitz, Felicis, Kleiner Perkins, Laude Ventures, Lightspeed Venture Partners, The House Fund, UC Investments

## Revenue

Listed 2 records.
Latest: over $100M (annualized), 2026-07-01.

- 2026-07-01 · over $100M (annualized) · https://x.com/ml_angelopoulos/status/2071629882057228680
  > On 2026/7/1, X reported that US company LMArena’s evaluation product had exceeded USD 100 million annualized revenue 8 months after launch. Its Agent Mode supports complex tasks and multiple tool-call rounds, evaluating models through measures such as task completion rate. (translated source brief)
- 2026-01-07 · $30M (ARR) · Andreessen Horowitz, Felicis, Kleiner Perkins, Lauderdale Ventures, LDVP, Lightspeed Venture Partners, The House Fund, University of California Investments · https://x.com/ml_angelopoulos/status/2008577473450250441
  > On 2026/1/7, X reported that AI model evaluation platform LMArena raised USD 150 million at a USD 1.7 billion valuation and reached USD 30 million in ARR. The company did not disclose the specific investors. (translated source brief)

## Team

No published team profiles are linked yet.

## Products

- [LMArena](/products/lmarena)

## Investors

- [Andreessen Horowitz](/institutions/andreessen-horowitz)
- [Felicis](/institutions/felicis)
- [Kleiner Perkins](/institutions/kleiner-perkins)
- [Laude Ventures](/institutions/laude-ventures)
- [Lauderdale Ventures](/institutions/lauderdale-ventures)
- [LDVP](/institutions/ldvp)
- [Lightspeed Venture Partners](/institutions/lightspeed-venture-partners)
- [The House Fund](/institutions/the-house-fund)
- [UC Investments](/institutions/uc-investments)
- [University of California Investments](/institutions/university-of-california-investments)

## Sources

- No source links are available for this profile.