Benchmarkcompany reported
Arena Leaderboards
Crowdsourced head-to-head model evaluations and public leaderboards.
Public / Open
ArenaPure-play commercialCatalog available · 1
LMArena
Crowdsourced model leaderboards from the Chatbot Arena team
LMArena, spun out of UC Berkeley's Chatbot Arena project, runs crowdsourced head-to-head AI model evaluations and leaderboards used across the industry. Evals-focused rather than RL environments, but a core evaluation vendor to labs.
Chatbot Arena leaderboard is a de facto industry standard
This legacy directory profile is awaiting claim-level source migration. Existing values are retained, not upgraded to verified facts.
| Website | lmarena.ai |
|---|---|
| Domains | Multi-Domain, Machine Learning |
| Location | San Francisco, Berkeley |
| Team size | 26-50 |
| Founded | 2024 |
| Funding | $100M seed (a16z, UC Investments, 2025); $150M at $1.7B valuation (Jan 2026) |
| Founders | Anastasios Angelopoulos @ml_angelopoulos, Wei-Lin Chiang @infwinston, Ion Stoica |
Capability coverage
Focus areas and technical capabilities are shown separately. Missing technical evidence remains Unknown.
Catalog-evidenced technical capabilities
Unknown. No source-backed catalog capability record is available yet.
Capability catalog
Products and services supported by official company materials. Reviewed 2026-08-16.
Environments & datasets
Verified public artifacts and documented private commercial inventory.
No verified catalog items recorded yet. This does not mean the company has no environments or datasets.
Sources
Structured sources have not yet been migrated for this profile.
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