Popular AI leaderboard Arena nearly doubles valuation to $3.1B valuation in 10 months
The company behind the popular LMArena leaderboard has raised $200 million led by Lightspeed and Khosla, and is now measuring AI models on alignment issues such as lying.

TL;DR
- Arena raised $200 million in a Series B round, reaching a $3.1 billion valuation.
- The company previously raised $150 million in a Series A round at a $1.7 billion valuation.
- Arena offers a free crowdsourced platform for users to rate AI model responses.
- It also provides a commercial service, AI Evaluations, for detailed AI model performance analytics.
- The company has introduced a new 'alignment' category to its leaderboard, assessing issues like unauthorized action, false attribution, and deceptive completion.
- OpenAI's models currently lead Arena's preliminary alignment leaderboard, with Claude models also ranking within the top ten.