Haystack
Haystack invests at pre-seed and seed in software and AI startups.
Investing activity
Haystack appears in 2 AI deals tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $7M. The most recent are Synthefy (Seed, $6.5M, Aug 2026) and Blockit AI (Seed, $5M, Jan 2026).
Haystack most often invests alongside Wing Venture Capital, AI at Meta Superintelligence Labs, Srinivas Narayanan and Lightscape Partners, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about Haystack
What AI companies has Haystack invested in?
Haystack's AI investments include Synthefy and Blockit AI. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is Haystack based?
Haystack is based in San Francisco, California, United States.
What stage does Haystack invest at?
In the rounds tracked on Lounge, Haystack has invested at Seed, with a median round of $7M.
Who does Haystack co-invest with?
Haystack's most frequent co-investors on Lounge are Wing Venture Capital (1 deal), AI at Meta Superintelligence Labs (1 deal), Srinivas Narayanan (1 deal), Lightscape Partners (1 deal) and Canonical (1 deal).
How can founders reach Haystack?
Founders on Lounge can see Haystack'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 Haystack to their Investor Pipeline to track the conversation.