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Arena AI
Arena AI provides a crowdsourced platform for ranking large language models and evaluating AI capabilities through interactive leaderboards and battles.
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Arena AI at a glance
Arena AI is an artificial intelligence company headquartered in United States. It has raised at least $250M across the 2 funding rounds on record. Its most recent funding round, Series A, raised $150M in January 2026.
Arena AI funding rounds
At least $250M raised across the 2 rounds on record. Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series A | $150M | 9 named | |
| Series A | $100M | 8 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Investors
Arena AI competitors
A few of Arena AI's closest competitors — see the full list of competitors and alternatives →
TensorTest provides private evaluations, reinforcement learning environments, and training data for artificial intelligence labs to test and train agents on real creative jobs. Its initial focus is on video editing through its platform TimelineBench, which uses professional editors' standards to evaluate agent performance on complete editing tasks.
OpenTrain AI operates a talent network and platform that connects artificial intelligence companies with pre-vetted domain experts for tasks such as data labeling, RLHF, red teaming, and model evaluation.
Toloka provides data solutions and training data for AI agents and large language models, serving artificial intelligence development teams. The company offers specialized training datasets, simulated environments, and evaluation and red-teaming services to assess and improve agent performance.
Snorkel AI builds specialized training data, benchmarks, and evaluation environments. These tools help frontier models and agents perform effectively in high-stakes domains.
Scale provides data, evaluations, and AI systems for enterprises, governments, and AI labs. The company offers solutions across the AI stack, including training data generation and human-in-the-loop application deployment.
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More on Arena AI in Xcout Intel
- 2 funding rounds with the investors in each, and who they co-invest with
- The full competitor set, tracking, exports and API access