OpenAI
Maker of ChatGPT; bought io (Jony Ive) and Statsig in 2025.
Investing activity
OpenAI appears in 10 AI deals tracked by the AI Lounge deals desk, rounds totalling $8.83B, and led 5 of them. The rounds are mostly Seed, Series C and Series A, with a median round size of $29M and the largest at $400M. The most recent are Orchestra Bio (Acquisition, Undisclosed, Oct 2026), Aristotle (Seed, $5M, Sep 2026) and Glass Imaging (Acquisition, $300M, Sep 2026).
OpenAI most often invests alongside True Ventures, Ben Broca, Drew Wadsworth and Wicklow Capital, and the companies it backs on AI Lounge are mostly in AI, AI agents for drug development and Consumer Electronics.
Deals
Frequently asked questions about OpenAI
What AI companies has OpenAI invested in?
OpenAI's AI investments include Aristotle, Chai Discovery, Sazabi, Subquadratic and Physical Intelligence. The 10 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is OpenAI based?
OpenAI is based in San Francisco, US.
What stage does OpenAI invest at?
In the rounds tracked on AI Lounge, OpenAI has invested at Seed, Series C and Series A, with a median round of $29M. OpenAI led 5 of those rounds.
Who does OpenAI co-invest with?
OpenAI's most frequent co-investors on AI Lounge are True Ventures (1 deal), Ben Broca (1 deal), Drew Wadsworth (1 deal), Wicklow Capital (1 deal) and Cognition (1 deal).
How can founders reach OpenAI?
Founders on AI Lounge can see OpenAI's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add OpenAI to their Investor Pipeline to track the conversation.