O
OpenAIOpenAI is the maker of ChatGPT and the GPT model family, serving roughly 900M weekly active users with 50M+ paid subscribers — it filed its S-1 on June 8, 2026 ahead of a planned IPO.
196 Pulse stories
X
xAIxAI is Elon Musk's AI lab behind the Grok model family — last valued at $230B in its January 2026 Series E before being folded into SpaceX in February 2026.
16 Pulse stories
Total Raised
$180B
$45B
OpenAIxAI
Last Valuation
$852B
$230B
OpenAIxAI
AI infra
Sector
AI infra
2015
Founded
2023
San Francisco, California, USA
HQ
Palo Alto, California, USA
Private
Status
Private
OpenAI investors
MicrosoftSoftBankNvidiaAmazonThrive CapitalSequoia CapitalKhosla Ventures
xAI investors
Valor Equity PartnersStepStone GroupFidelityQatar Investment AuthorityMGXNvidiaCisco
Data from Value Add Pulse coverage and company research — see the full threads for OpenAI and xAI.