51 Ventures
Investing activity
51 Ventures appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $5M. The most recent is Axo Longevity (Seed, $5M, Sep 2026).
51 Ventures most often invests alongside Izou Partners, LifeX Ventures, NIAN Sports & Entertainment and Everywhere Ventures, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about 51 Ventures
What AI companies has 51 Ventures invested in?
51 Ventures's AI investments include Axo Longevity. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does 51 Ventures invest at?
In the rounds tracked on Lounge, 51 Ventures has invested at Seed, with a median round of $5M.
Who does 51 Ventures co-invest with?
51 Ventures's most frequent co-investors on Lounge are Izou Partners (1 deal), LifeX Ventures (1 deal), NIAN Sports & Entertainment (1 deal), Everywhere Ventures (1 deal) and MS&AD Ventures (1 deal).
How can founders reach 51 Ventures?
Founders on Lounge can see 51 Ventures'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 51 Ventures to their Investor Pipeline to track the conversation.