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Arena, an AI evaluation platform, secured $200 million in Series B funding led by Lightspeed Venture Partners and Khosla Ventures, reaching a $3.1 billion valuation.
Amount Raised
$200 Million
Round Type
Series B
BerkeleySoftwareArtificial IntelligenceMachine LearningNatural Language ProcessingInvestors
Description
Arena, an AI evaluation platform founded by two UC Berkeley PhDs, completed a $200 million Series B round co-led by Lightspeed Venture Partners and Khosla Ventures. The funding pushes the company's valuation to $3.1 billion, up 80% from $1.7 billion in January 2026. Arena provides evaluation, exam administration, and scoring services for AI models including ChatGPT and Claude, with annualized revenue exceeding $100 million as of June 2026. The company has emerged as a key player in the rapidly growing AI evaluation market.
Fundz sees it the moment Arena raises, hires an exec or expands, usually minutes after it happens, and tells you who to reach.
Funding Insights
What this usually meansArena raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
145 of these a day, filtered to the companies you pick, with the decision-maker attached.
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