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
TA
Together AITogether AI provides a cloud platform for training, fine-tuning, and running inference on open-source AI models at scale.
5 Pulse stories
Total Raised
$250M
$1.3B
ArenaTogether AI
Last Valuation
$1.7B
$8.3B
ArenaTogether AI
AI infra
Sector
AI infra
2025
Founded
2022
San Francisco, CA
HQ
San Francisco, CA
Private
Status
Private
Arena investors
FelicisUC InvestmentsAndreessen HorowitzKleiner PerkinsLightspeed Venture PartnersThe House FundLaude Ventures
Together AI investors
Aramco VenturesVista Equity PartnersGeneral CatalystEmergence CapitalNVIDIASalesforce VenturesMarch CapitalKleiner Perkins
Data from Value Add Pulse coverage and company research — see the full threads for Arena and Together AI.