Vector Databases in United States

This page covers the 6 vector databases companies in this directory that are headquartered in United States. That is 55% of the 11 vector databases companies tracked across every country, which makes United States the largest of the 6 national clusters in this category. Headquarters location matters for buyers who need contracting in a local legal entity, data residency inside United States, or overlapping working hours with an in-country delivery team — so the list below is filtered on stated headquarters, not on sales presence or reseller coverage.

Company size varies widely across the United States cohort. Of the 6 companies here that publish a headcount range: 4 in the 11-50 band, 1 in the 51-200 band, 1 in the 201-500 band. The most common profile is 11-50 employees (4 companies), which is a useful signal when you are weighing a boutique vector databases team that will give you senior attention against a larger firm that can absorb a multi-workstream programme. Headcount bands are self-reported and are left blank rather than estimated for the 0 companies that do not disclose one.

6 of the 6 companies disclose a total raised figure, summing to $341.8M across those companies; the largest disclosed total is Pinecone at $138M. Funding is only listed where a company or a credible public source has stated it, so an absent figure here means undisclosed, not zero — several profitable, bootstrapped vector databases companies in United States raise nothing at all. Stated funding stages in this cohort: Seed (2), Series A (2), Series B (2).

Contracting notes specific to United States suppliers. There is still no single federal omnibus privacy statute — the American Privacy Rights Act expired without a vote at the end of the 118th Congress — so obligations come from the states instead. Twenty states now have comprehensive consumer privacy laws in effect, with Indiana, Kentucky and Rhode Island's taking effect on 1 January 2026; California's CCPA as amended by the CPRA remains the broadest and the only one carrying even a limited private right of action. Sectoral rules layer on top of that: HIPAA where the work touches health data, GLBA where it touches consumer financial data, and FedRAMP authorisation where the buyer is a federal agency. The practical question to put to a United States vendor is which specific state regimes its standard data processing agreement is already mapped to, and in which states or regions the processing and any sub-processing physically happens.

Every entry is drawn from the same independently maintained vector databases directory as the rest of the site. Placement is not sold, the order is alphabetical rather than ranked, and the listing is not auto-scraped. Where a field is unknown it is shown as unknown rather than filled with a guess, so you can see exactly how much is on the record for each United States provider before you contact them.

Prefer to compare without the country filter? Browse the full Vector Databases directory or the wider AI company directory.