A
ArenaArena (formerly LMArena, born as Chatbot Arena at UC Berkeley) operates the crowdsourced leaderboard and evaluation platform used industry-wide to benchmark and rank AI models.
3 Pulse stories
Z
Z.aiZ.ai (formerly Zhipu AI) is a Beijing-based AI lab developing the GLM family of large language models and agentic developer tools like ZCode.
3 Pulse stories
Total Raised
$250M
ArenaZ.ai
Last Valuation
$1.7B
ArenaZ.ai
AI infra
Sector
AI infra
2025
Founded
2019
San Francisco, CA
HQ
Beijing, China
Private
Status
Public (2513.HK)
Arena investors
FelicisUC InvestmentsAndreessen HorowitzKleiner PerkinsLightspeed Venture PartnersThe House FundLaude Ventures
Z.ai investors
AlibabaTencentAnt GroupMeituanXiaomiHillhouseQiming Venture PartnersProsperity7 Ventures
Data from Value Add Pulse coverage and company research — see the full threads for Arena and Z.ai.