HOME / AI TOOLS / TOP 10 AI SEARCH & RETRIEVAL ENGINES / PGVECTOR

pgvector

PostgreSQL extension bringing vector search to relational databases

RANKED #9 · TOP 10 AI SEARCH & RETRIEVAL ENGINESLISTERSCORE 76.3

pgvector is a PostgreSQL extension enabling vector similarity search within standard relational databases. It allows teams to leverage existing PostgreSQL infrastructure for vector operations without new specialised systems.

Pricing from	Free (open-source extension)
Best for	Teams seeking vector search without introducing new database technologies
Website	github.com/pgvector/pgvector

Strengths and trade-offs

No new database to manage or maintain alongside existing PostgreSQL
Combines relational data with vector search seamlessly

Vector search performance lags dedicated vector databases
Scaling limitations with massive vector workloads

Appears in

AI TOOLS

Top 10 AI Search & Retrieval Engines

Pinecone95.02

Weaviate92.73

Milvus90.3RANKINGfull ranking →

Alternatives to pgvector

Pinecone Managed vector database for semantic search at scale	#1 in Top 10 AI Search & Retrieval Engines	95.0
Weaviate Open-source vector search platform with GraphQL API	#2 in Top 10 AI Search & Retrieval Engines	92.7
Milvus Open-source vector database engineered for scalable similarity search	#3 in Top 10 AI Search & Retrieval Engines	90.3
OpenSearch Open-source search and analytics engine with vector capabilities	#4 in Top 10 AI Search & Retrieval Engines	88.0
Qdrant Vector search engine optimised for extended filtering and production workloads	#5 in Top 10 AI Search & Retrieval Engines	85.7
Elasticsearch	#6 in Top 10 AI Search & Retrieval Engines	83.3

Questions about pgvector

How much does pgvector cost?

Lister lists pgvector's pricing as: Free (open-source extension).

Is pgvector free?

Yes. Its pricing reads: Free (open-source extension).

Who is pgvector best for?

pgvector is best for teams seeking vector search without introducing new database technologies.

Where does pgvector rank?

pgvector is ranked #9 in Top 10 AI Search & Retrieval Engines (Lister Score 76.3).

What are the best alternatives to pgvector?

The closest alternatives on Lister are Pinecone (#1 in Top 10 AI Search & Retrieval Engines), Weaviate (#2 in Top 10 AI Search & Retrieval Engines) and Milvus (#3 in Top 10 AI Search & Retrieval Engines).

Is this your company?

Claim pgvector to suggest corrections to its listing (pricing, features, details) or ask about an enhanced profile. We review every claim before anything changes.