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Pyyan / Compare / Vertex AI Vector Search vs Milvus

Vertex AI Vector Search vs Milvus

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Vector Databases · verified 13 Aug 2026

Vertex AI Vector SearchGooglecurrent
MilvusZillizcurrent
3 slots left
SpecificationVertex AI Vector SearchMilvus
SummaryGoogle's own, built on ScaNN.Built for billions of vectors.
IndexScaNNHNSW, IVF, DiskANN, GPU
Hybrid searchYesYes
HostingManagedSelf-host and managed
LicenceProprietaryApache 2.0
p50 latency~15ms~10ms
CategoryVector DatabasesVector Databases
OfficialGoogle ↗Zilliz ↗

Highlighted rows are where these differ.

Vertex AI Vector Search

  • The research behind it powers Google's own retrieval
  • Tied to the platform

Best for workloads already on Google Cloud.

Full spec sheet →

Milvus

  • Distributed architecture with GPU index support
  • Heavier to operate than the alternatives

Best for very large corpora.

Full spec sheet →