Vertex AI Vector Search
scann quality, and no scale to zero
the only major managed service built on scann, and the only one here that bills you the same whether you serve a million queries or none.
this is the productised descendant of google's scann work, and the retrieval quality reflects that. it scales enormously and is native to gcp.
the structural weakness holds regardless of what the rates turn out to be: billing is per node-hour and always-on, with no scale to zero. a low-traffic index costs the same as a busy one. that makes it poor value for anything intermittent and reasonable only at sustained high query rates — the opposite of the direction the rest of the category moved in during 2026.
the description above is ours, condensed from the ranking. pricing moves — check it on the vendor's own page before you rely on it.
- category
- vector databases
- pricing
- node-hour billing; rates could not be verified
- website
- cloud.google.com
the only major managed service built on scann, and the only one here that bills you the same whether you serve a million queries or none.
we researched this category against vendors' own pricing pages and licence files. that is where this line comes from — not from the vendor, and not from anything they paid for.