Arena: Series B funding
$200 million Series B at a $3.1 billion valuation, co-led by Lightspeed Venture Partners and Khosla Ventures, with participation from Salesforce Ventures, 01 Advisors, Dell Technologies Capital, Acrew Capital and Endeavor Catalyst, and support from existing investors a16z, Felicis, AMP PBC, QuantumLight, The House Fund and others. Arena (formerly LMArena) sells AI model evaluations built on human votes., valued at $3.1 billion valuation
Dated 8 Oct 2026Source checked 8 Oct 2026Quote found on its page again 4 Nov 2026Basis: stated
In the source's own words
“Arena announces a $200 million Series B at a $3.1 billion valuation to advance real-world AI evaluation.”
Where it was read
Arena (company blog), checked 8 Oct 2026
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