Rockset vs pgvector (PostgreSQL Extension)
Side-by-side from the Top 11 ranking of Pinecone vs Weaviate vs Zilliz: 11 Best Vector Databases 2026. Last verified May 31, 2026.
The short answer
Rockset ranks higher on Top 11 (#10 vs #11) for AI engineers building RAG and semantic search at scale. The best choice for real-time vector search on streaming data.
At a glance
| Rockset | pgvector (PostgreSQL Extension) | |
|---|---|---|
| Top 11 rank | #10 / Pinecone vs Weaviate vs Zilliz: 11 Best Vector Databases 2026 | #11 / Pinecone vs Weaviate vs Zilliz: 11 Best Vector Databases 2026 |
| Score (out of 9.4) | 7.7 | — |
| Best for | Vector search on real-time data | Vector search inside PostgreSQL |
| Pricing | $$$$ (Usage-based to custom/enterprise) | $ (Open source) |
| HQ | San Mateo, USA | Open Source |
| Founded | 2016 | — |
Rockset
The best choice for real-time vector search on streaming data.
rockset.comSee full entry in Pinecone vs Weaviate vs Zilliz: 11 Best Vector Databases 2026
pgvector (PostgreSQL Extension)
A pragmatic choice for adding vector search to an existing Postgres stack.
github.com/pgvector/pgvectorSee full entry in Pinecone vs Weaviate vs Zilliz: 11 Best Vector Databases 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.