💰Arena Raises $200M at $3.1B as Model Rankings Get Pricey
TL;DR
The AI leaderboard Arena raised a $200M Series B at a $3.1B valuation, nearly double its January mark. Lightspeed and Khosla led.
The AI leaderboard Arena raised a $200M Series B at a $3.1B valuation, nearly double its January mark. Lightspeed and Khosla led. It also launched an alignment leaderboard that scores unauthorized action and deceptive completion.
Key Points
Valuation went from $1.7B post-money in January to $3.1B, with annualized revenue at $100M by June
Salesforce Ventures, Dell Technologies Capital, a16z and Felicis also participated
The new alignment board ranks models on unauthorized action, false attribution and deceptive completion
In the preliminary ranking OpenAI models lead, with Claude Opus 5.5 sixth and Claude Fable ninth
Why It Matters
Static benchmarks stop working once models can tell they are being tested, and labs now pay for neutral evaluators. A third-party referee with $100M in revenue is becoming part of the release process.
Quick Facts
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