Compare · vector databases

FAISS VS pgvector_

As of 4 November 2026, pgvector is named by 713 companies and FAISS by 388; FAISS skews to companies under 200 people (45% vs 47%), pgvector to companies over 1,000 (26% vs 30%).

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

The website-and-DNS footprint is not comparable between a marketing suite and a CRM: FAISS's script and mail records show on hundreds of thousands of small sites, pgvector rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.

FAISS: 2–200 employees
45%
pgvector: 2–200 employees
47%
FAISS: 1,000+ employees
30%
pgvector: 1,000+ employees
26%
Postings per company, 90 days
2.2 · 2.4
Website or DNS footprint
0 · 0
388companies name FAISS
713companies name pgvector
179name both
840 · 1,741postings in 90 days, FAISS · pgvector
02 — Side by side

Who chooses which

Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.

By company size
SegmentFAISSsharepgvectorshareLeans
Self-employed123%395%pgvector
2-10 employees4010%9513%pgvector
11-50 employees6617%10515%FAISS
51-200 employees6717%13519%even
201-500 employees5314%9213%even
501-1000 employees328%629%even
1001-5000 employees5113%9613%even
5001-10000 employees154%223%even
10,001+ employees5213%679%FAISS
By industry
SegmentFAISSsharepgvectorshareLeans
Technology & software24563%41558%FAISS
Business & finance services7419%15522%pgvector
Manufacturing & industry164%314%even
Public, community & associations113%142%even
Media & content113%213%even
Consumer services & leisure82%183%even
Commerce & trade72%152%even
Transport, logistics & rental62%71%even
Utilities & infrastructure41%122%even
Automotive21%––outside top 12
Health care21%81%even
Hospitality & travel21%41%even
Property & construction––101%outside top 12
By country
SegmentFAISSsharepgvectorshareLeans
United States26067%42960%FAISS
India277%284%FAISS
United Kingdom195%436%even
Canada133%172%even
Spain72%81%even
France62%203%even
Singapore51%112%even
Germany41%324%pgvector
Poland41%81%even
Netherlands31%––outside top 12
United Arab Emirates21%––outside top 12
Australia21%––outside top 12
Brazil––142%outside top 12
Italy––112%outside top 12
Switzerland––81%outside top 12
Postings by team (share of each tool's postings)
SegmentFAISSsharepgvectorshareLeans
Data & AI82570%1,24158%FAISS
Software engineering15914%63930%pgvector
IT operations & business systems282%543%even
General management & consulting171%80%even
Engineering (non-software)40%201%even
Sales30%111%even
Unclassified30%10%even
Business development & strategy20%––outside top 12
Education & training20%––outside top 12
Finance & accounting10%10%even
Human resources10%––outside top 12
Product, program & project management10%131%even
construction and civil––10%outside top 12
Marketing & communications––10%outside top 12
Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

pgvector is named by 713 companies in job postings and FAISS by 388; 179 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/faiss-vs-pgvector)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • SegmentsCountry, size and industry from the company profile built from its website.
  • Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
FAQ

FAISS vs pgvector: questions

Which is more used, FAISS or pgvector?

By companies naming it in their own job postings, pgvector (713) over FAISS (388). By website-and-DNS footprint, pgvector (0 vs 0), because its scripts and mail records sit on many small company sites.

Who chooses FAISS?

45% of FAISS companies have 2 to 200 employees, against 47% for pgvector. 30% of FAISS companies have over 1,000 employees, against 26% for pgvector.

Do companies run both?

179 companies name both in their postings, usually FAISS in marketing and pgvector in sales, or during a migration.

Where do these numbers come from?

From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.

Companies and people

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