Arena Stock
| Valuation | $3.1B1 |
| Valuation Date | Oct 8, 2026 |
| Implied Valuation | $3.14B |
| Last Price | $11.17 |
| 52-Week High | n/a |
| 52-Week Low | n/a |
| YTD Return | n/a |
| 1-Year Return | n/a |
| 3-Year Return | n/a |
| Total Funding | $450M1, 2 |
| Latest Round Amount | $200M1 |
| Latest Round | Series B |
| Funding Rounds | 3 |
| IPO Status | Unknown |
| Expected IPO Date | n/a |
| Revenue | $100M3 |
| Revenue Type | Run Rate |
| P/S Ratio | 31.0 |
About Arena
Arena is an AI evaluation company that ranks large language models and AI agents based on how real people use them. Its free public platform at arena.ai lets users enter a prompt, compare answers from two anonymous models side by side and vote for the better one. Those votes feed public leaderboards for text, coding, vision, search, image and video models. The company has also added Agent Arena, which ranks AI agents on real multi-step tasks, and an Alignment Index that tracks unsafe agent behavior such as deception or unauthorized actions. Arena makes money by selling AI Evaluations, a paid service that gives AI labs and enterprises detailed performance analytics drawn from its community data and is billed on consumption. Formerly known as LMArena, the company began in 2023 as the Chatbot Arena research project at UC Berkeley and counts Databricks co-founder Ion Stoica among its co-founders.
Invest in Arena
Arena is a private company, so you can't purchase it with a regular brokerage account. However, its shares are available on Clarity (formerly Hiive).
Clarity is a secondary marketplace where accredited investors can buy and sell shares of private, pre-IPO companies. Invest in the world's most exciting startups before they go public.
Invest on ClarityStock Analysis may be compensated for user sign-ups through Clarity links. Clarity is not affiliated with Stock Analysis. Securities offered by Clarity Capital Limited, member of FINRA/SIPC.
Related Companies
News
Arena AI Alignment Index
Arena introduced an Alignment Index leaderboard scoring agent unauthorized actions, false attribution, and deceptive completions from real sessions.
Arena announces $200M Series B and Alignment Index
Arena said it raised $200 million in Series B funding at a $3.1 billion valuation and released an Alignment Index measuring how AI systems align with human values in real-world tasks.
Popular AI leaderboard Arena nearly doubles valuation to $3.1B valuation in 10 months
Arena raised a $200 million Series B at a $3.1 billion valuation, co-led by Lightspeed Venture Partners and Khosla Ventures. The company also added an alignment category to its leaderboard.
Arena, the AI leaderboard everyone uses, is now a $100M business
Arena reached $100 million in annualized run-rate revenue eight months after launching its commercial evaluation service. CEO Anastasios Angelopoulos said the revenue is consumption-based rather than ...
Empowering Users to Get More Done With Agent Mode
Arena launched Agent Mode, which lets models complete multi-step tasks with tools such as web search, coding and a sandbox. Data from these sessions powers its new Agent Arena leaderboard.
Introducing Max
Arena released Max, a model router trained on more than 5 million community votes that sends each prompt to the model best suited for it. A latency-aware version became the default in Direct Chat.
LMArena is now Arena
LMArena rebranded as Arena and moved its platform to arena.ai. The company said it had more than 5 million monthly users across 150 countries.
AI startup LMArena triples its valuation to $1.7 billion in latest fundraise
Reuters reported Arena (formerly LMArena) raised $150M in January 2026 at a $1.7B valuation before its October Series B.
LMArena lands $1.7B valuation four months after launching its product
LMArena raised a $150 million Series A at a $1.7 billion post-money valuation, led by Felicis and UC Investments. Its annualized consumption rate was $30 million as of December.
New Product: AI Evaluations
LMArena launched AI Evaluations, its first commercial product, which sells model labs and enterprises evaluations based on community feedback. The company pledged to keep its public leaderboard free a...
LM Arena, the organization behind popular AI leaderboards, lands $100M
LM Arena raised a $100 million seed round at a $600 million valuation, led by Andreessen Horowitz and UC Investments.
Study accuses LM Arena of helping top AI labs game its benchmark
A paper from Cohere, Stanford, MIT and Ai2 alleged that LM Arena let some large AI labs privately test many model variants before publishing only the best scores. LM Arena disputed the findings.