pgvector vs Pinecone

Postgres extension vs dedicated vector DB.

pgvector is free and integrates with your existing Postgres. Pinecone is purpose-built for vector search at scale. Choice depends on scale and simplicity priorities.

At a glance

	pgvector	Pinecone
Cost	Marginal (existing DB)	Usage-based
Scale	Good to 1-10M vectors	Billions
Setup	SQL, familiar	New API
Features	Basic HNSW	Rich (filtering, quantization)

When to pick pgvector

You already run Postgres, under 10M vectors, want simplicity.

When to pick Pinecone

Serious scale, want purpose-built features, accept managed cost.

My verdict

pgvector until you outgrow it. Most teams never need to migrate.

pgvector vs Pinecone

At a glance

When to pick pgvector

When to pick Pinecone

My verdict

Further reading