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Top AI companies in Boston

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

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Built from a search like: Top AI companies in Boston

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

  1. 1
    Pacific Northwest National Laboratory· Richland, Washington, United States

    Pacific Northwest National Laboratory (PNNL) draws on its distinguishing strengths in chemistry, Earth sciences, biology, and data science to advance scientific knowledge and address challenges in energy resiliency and national security. PNNL invites you to participate in the conversation on our social media channels. View our social media policy: https://www.pnnl.gov/social-media-policy

    • Grant
    • 6.3k employees
    • Founded 1965
  2. 2
    Cobb· Siloam Springs, Arkansas, United States

    Cobb advances the global poultry industry through high-quality genetic products backed by innovative research, enabling worldwide access to healthy and affordable protein. As the world's oldest pedigree broiler breeder and headquartered in Siloam Springs, Arkansas, Cobb provides poultry genetics to more than one hundred countries. Learn more at www.CobbGenetics.com.

    • 1.4k employees
    • Founded 1916
  3. 3
    Care Access· Boston, Massachusetts, United States

    Care Access works around the world to make the future of health better for all. We help people learn more about their health, access health resources they need, and participate in research to help find new medicines and cures.

    • Grant
    • 893 employees
    • Founded 2015
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  5. 4
    Instem· Boston, Massachusetts, United States

    SaaS Products & Services for R&D that drive discovery, accelerate studies, and advance your research.

    • Grant
    • 524 employees
    • Founded 1969
  6. 5
    The Martinos Center for Biomedical Imaging· Boston, Massachusetts, United States

    The MGH/HST Martinos Center for Biomedical Imaging is a leader in translational research with and development of a host of state-of-the-art imaging technologies. Its faculty include world-class experts in disciplines spanning the basic biosciences and clinical investigation.The backbone of the Martinos Center is the Imaging and Computational Core Resources. The Imaging Cores include the MRI, MEG and Optical Imaging Cores, with an extensive and expanding inventory of state-of-the-art imaging facilities and equipment, including related laboratories and testing rooms. The Computational Core oversees data processing, computational infrastructure, software and hardware issues. Together, the Imaging and Computational Cores develop and provide state-of-the art biomedical imaging and image processing technology and techniques to the Center's research faculty and user community.

    • 242 employees
    • Founded 2000

Find engineers at AI companies in Boston

Boston 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 112 matching companies in Refolk’s index, this is a good map of where the AI talent in Boston lives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest AI companies in Boston 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 Boston hiring senior staff” or “founders of AI companies in Boston 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 Boston 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: Fri, 18 Sep 2026 07:46:00 GMT

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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: Fri, 18 Sep 2026 07:46:00 GMT. For a list built against the index as it stands today, sign up and run the search live.

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