Pinecone releases pg_pinecone, an open-source Postgres search extension

Pinecone released pg_pinecone on October 27, 2026, an Apache 2.0 Postgres extension that adds vector search to existing pgvector columns. On 1 million 768-dimension vectors its native index takes 136 MB versus 2.0 GB for HNSW on halfvec and 4.1 GB on full-size vectors.

• Index for 1M vectors: 136 MB vs 2.0 GB for HNSW on halfvec
• 1.3 ms latency at 0.95 recall vs 1.7 ms for HNSW
• Build time 45 seconds vs 62 and 79 seconds for HNSW
• Requires PostgreSQL 17 or 18, superuser access and pgvector