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Greylock portfolio AI companies

Early-stage venture firm with a strong enterprise and AI footprint. Filtered to companies in AI.

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Built from a search like: “Greylock-backed AI companies”

Ranked by current headcount across Greylock-backed AI companies. Refreshed daily.

  1. 1
    Vertex Pharmaceuticals· Boston, Massachusetts, United States
    • post ipo secondary
    • 6.4k employees
    • Founded 1989
  2. 2
    OPTIC· San Francisco, California, United States
    • Seed
    • 280 employees
    • Founded 2021
  3. 3
    AVEO Oncology· Boston, Massachusetts, United States
    • Post-IPO equity
    • 202 employees
    • Founded 2001
  4. 4
    Atomic AI· San Francisco, California, United States
    • Series A
    • 30 employees
    • Founded 2021
  5. 5
    Manas AI
    • Seed
    • 22 employees
    • Founded 2025

Greylock’s AI portfolio

The list above ranks Greylock-backed AI companies by current headcount, drawn from public LinkedIn and Crunchbase records. 5 matching companies in our index give you a quick read on where Greylock has gone deepest in the AI space.

Greylock’s AI bets tend to share a thesis. The engineers, ML researchers, and founders inside these companies are often building the same primitives - and they show up in AI talent pools across the next decade.

Refolk converts this list into a live search. Ask for “Greylock AIcompanies hiring senior engineers” or “founders of Greylock-backed AIcompanies” and Refolk returns a fresh ranked shortlist.

How this list is built

Refolk pulled AI companies whose disclosed Crunchbase investor list includes Greylock, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 10:37:21 GMT

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