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Top AI companies in Seattle

Companies building AI products, foundation models, and applied ML platforms. Filtered to companies headquartered in Seattle.

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Built from a search like: “Top AI companies in Seattle”

Ranked by current headcount across AI companies headquartered in Seattle. Refreshed daily.

  1. 1
    Allen Institute· Seattle, Washington, United States
    • Grant
    • 1.5k employees
    • Founded 2003
  2. 2
    Just - Evotec Biologics· Seattle, Washington, United States
    • Grant
    • 611 employees
    • Founded 2014
  3. 3
    University of Washington School of Public Health· Seattle, Washington, United States
    • Grant
    • 345 employees
  4. 4
    Benaroya Research Institute· Seattle, Washington, United States
    • Grant
    • 309 employees
    • Founded 1956
  5. 5
    Institute for Systems Biology (ISB)· Seattle, Washington, United States
    • Grant
    • 272 employees
    • Founded 2000
Reveal 134 more·100 free credits, no card

Find engineers at AI companies in Seattle

Seattle has long been a hub for AI, and the list above ranks the largest AI companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 139 matching companies in our index, this is a good map of where the AI talent in Seattlelives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest AI companies in Seattle tend to be the gravitational centres for specialised talent - senior engineers, ML researchers, applied scientists, designers - while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for “AI engineers in Seattlehiring senior staff” or “founders of AI companies in Seattlewho left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled AI companies headquartered in Seattle from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 08:20:35 GMT

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