Top AI companies in Seattle

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

Edit the query above, or pick a refinement. 500 free credits on sign-up, no card needed.

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

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

1
Allen Institute· Seattle, Washington, United States
We do science differently—bigger, bolder, and built to be shared with the world. From mapping every cell in the brain to decoding how the immune system fights disease and beyond, we operate at a scale designed to generate resources the entire scientific community can build on. Our commitment to open science means every breakthrough belongs to everyone.
- Grant
- 1.5k employees
- Founded 2003
2
Institute for Health Metrics and Evaluation· Seattle, Washington, United States
The Institute for Health Metrics and Evaluation (IHME) is an independent global health research center at the University of Washington that provides rigorous and comparable measurement of the world's most important health problems and evaluates the strategies used to address them. IHME makes this information freely available so that policymakers have the evidence they need to make informed decisions about how to allocate resources to best improve population health.Our mission is to improve the health of the world’s populations by providing the best information on population health.
- 926 employees
- Founded 2007
3
University of Washington School of Public Health· Seattle, Washington, United States
The UW School of Public Health, ranked among the top 10 public health schools in the United States, is grounded in teaching, research and service. For more than 50 years, our 10,000+ graduates have gone on to transform communities, lead health organizations and find solutions to emerging public health challenges.
- Grant
- 315 employees
- Founded 1970
Live search
This list is a starting point
I can run a natural-language search across LinkedIn, GitHub, and the open web. Fire one of these, or edit the box up top to match exactly who you're after.
- Series-B AI companies in SeattleRun
- AI companies in Seattle hiringRun
500 free credits on sign-up, no card needed.
4
Benaroya Research Institute· Seattle, Washington, United States
Benaroya Research Institute (BRI) is powering discoveries in order to learn how to rebalance the immune system in all autoimmune and immune system diseases. Our ultimate goal is to achieve a healthy immune system for each individual. Affiliated with Virginia Mason Franciscan Health.As a world-renowned, non-profit research institute we advance science that will predict, prevent, reverse and cure diseases of the immune system. Our Centers for Discovery accelerate progress through laboratory breakthroughs in immunology that can be translated to clinical therapies.
- Grant
- 313 employees
- Founded 1956
5
Kaiser Permanente Washington Health Research Institute· Seattle, Washington, United States
Kaiser Permanente Washington Health Research Institute conducts practical research that helps people around the world stay healthy. Kaiser Permanente is recognized as one of America’s leading health care providers and not-for-profit health plans. Posts ≠ medical advice.
- 221 employees
- Founded 1983

6
Center for Infectious Disease Research· Seattle, Washington, United States
The Center for Infectious Disease Research (formerly Seattle Biomedical Research Institute) was founded in 1976 by Dr. Ken Stuart and grew to become the largest independent research laboratory in the nation focused on infectious diseases. Its 250+ scientists and support staff focus the science on the three areas of infectious disease research that will have the most impact on global health: vaccines, drugs, and diagnostics. On October 1, 2018, the Center for Infectious Disease Research joined forces with Seattle Children’s to form the largest pediatric infectious disease research program in the US. For more information about current research projects, visit https://www.seattlechildrens.org/research/centers-programs/global-infectious-disease-research/
- Grant
- 168 employees
- Founded 1976
7
Blue Marble Space· Seattle, Washington, United States
Blue Marble Space is a 501(c)(3) non-profit research institute. We envision a world united by our common identity as ambassadors of Earth.Our mission is to enable scientists and educators to push the frontiers of knowledge and deliver transformative training. We foster curiosity and creativity in research, communicate with global audiences, and mentor the next generation to be stewards of Earth.We are a global community and nonprofit research institute, united by a shared commitment to understanding life as a universal phenomenon, inviting lifelong learners on a journey to explore space and advance a sustainable future.
- Grant
- 161 employees
- Founded 2009
8
Applied Physics Laboratory-UW· Seattle, Washington, United States
Applied Physics Laboratory-UW is a research institution based out of 1013 NE 40TH ST, Seattle, Washington, United States.
- 161 employees
9F
FRED HUTCHINSON CANCER RESEARCH· Seattle, Washington, United States
FRED HUTCHINSON CANCER RESEARCH is a research company based out of 1100 FAIRVIEW AVE N, Seattle, Washington, United States.
- 150 employees
10
NorthWest Research Associates· Seattle, Washington, United States
NWRA is a scientific research group, owned and operated by its Principal Investigators, with expertise in the geophysical and related sciences. NWRA Mission Statement: To provide an environment for unencumbered science, in which scientists and engineers can achieve excellence in basic and applied research.
- 128 employees
- Founded 1984

Reveal 52 more·500 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 57 matching companies in Refolk’s index, this is a good map of where the AI talent in Seattle lives - 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 Seattle hiring senior staff” or “founders of AI companies in Seattle who 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 monthly.

Last refreshed: Tue, 15 Sep 2026 08:59:53 GMT

Search this list

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

500 free credits on sign-up, no card needed.

Related lists

See all company lists.

Or zoom out

Common questions

How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Tue, 15 Sep 2026 08:59:53 GMT. For a list built against the index as it stands today, sign up and run the search live.

Can I get the full list of 57 companies?

Yes. This page shows the top of the ranking; sign up and I'll run the search live for the complete, current list. You start with 500 free credits, no card required.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

Try it on the search you came here for

Stop building boolean strings. Just describe the person.

Type one sentence. I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web as it is right now, and hand back a ranked list with the reason next to every name.

01Describe them
One plain sentence. Role, city, stack, stage, whatever matters to you.
02I read the web live
GitHub, public LinkedIn and Crunchbase records, the open web. Not a database that went stale last quarter.
03You read the shortlist
Ranked, with the reasoning under every name. Open a profile, ask a follow-up, narrow it down.

No boolean, no filters, no seat to buy. One box.
Read at search time, so a profile updated yesterday counts today.
Every step visible as it runs, every name with its reason.

500 free credits on sign-up. No card, no demo call. See real searches.

This list is a starting point