pgvector vs pgvectorscale
pgvector: The standard Postgres extension for vector similarity search with HNSW and IVFFlat indexes. pgvectorscale: TigerData's Postgres extension adding StreamingDiskANN indexes on top of pgvector.
key differences
- pgvectorscale is built for larger datasets (≤ 1 PB) than pgvector (≤ 10 TB).
- Horizontal scaling is addon in pgvector and none in pgvectorscale.
choose pgvector for
- +Adding semantic search to an existing Postgres app
- +RAG with permission filtering via SQL joins
- +Recommendations next to product data
- +Deduplication and similarity lookups
best at · Vector search, RAG, OLTP
choose pgvectorscale for
- +Large pgvector tables that no longer fit HNSW in RAM
- +Cost-efficient RAG on Postgres
- +Filtered semantic search with labels
best at · Vector search, RAG, OLTP
pgvector vs pgvectorscale: FAQ
What is the difference between pgvector and pgvectorscale?
pgvector: The standard Postgres extension for vector similarity search with HNSW and IVFFlat indexes. pgvectorscale: TigerData's Postgres extension adding StreamingDiskANN indexes on top of pgvector. pgvectorscale is built for larger datasets (≤ 1 PB) than pgvector (≤ 10 TB). Horizontal scaling is addon in pgvector and none in pgvectorscale.
When should I choose pgvector over pgvectorscale?
Choose pgvector for adding semantic search to an existing Postgres app, RAG with permission filtering via SQL joins and recommendations next to product data. Choose pgvectorscale for large pgvector tables that no longer fit HNSW in RAM, cost-efficient RAG on Postgres and filtered semantic search with labels.
Is pgvector or pgvectorscale more popular?
pgvector ranks #44 on the WhichDB Score (40.0/100) and pgvectorscale ranks #243 (13.9/100). Popularity is not fit: check the requirements that matter for your project.
Are pgvector and pgvectorscale open source?
Yes. pgvector is open source. License: PostgreSQL License. Yes. pgvectorscale is open source. License: PostgreSQL License.