Pyyan / Compare / Vertex AI Vector Search vs Weaviate
Vertex AI Vector Search vs Weaviate
2 of 5Vector Databases · verified 13 Aug 2026
Vertex AI Vector SearchGooglecurrent
WeaviateWeaviatecurrent| Specification | Vertex AI Vector Search | Weaviate |
|---|---|---|
| Summary | Google's own, built on ScaNN. | Hybrid search with batteries included. |
| Index | ScaNN | HNSW |
| Hybrid search | Yes | Yes, native |
| Hosting | Managed | Self-host and managed |
| Licence | Proprietary | BSD-3 |
| p50 latency | ~15ms | ~12ms |
| Category | Vector Databases | Vector Databases |
| Official | Google ↗ | Weaviate ↗ |
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.
Weaviate
- Vector, BM25 and metadata filters in one query
- Modules for embedding generation built in
Best for hybrid keyword and semantic search.