Benchmark: pgvector vs Pinecone vs Qdrant vs Weaviate

Benchmarked 5 vector databases on 1M vectors at 1536 dims. Latency, recall, and cost Latency (p50): Qdrant: ~3ms Milvus: ~4ms pgvector HNSW: ~5ms Weaviate: ~8ms Pinecone Serverless: ~12ms pgvector is way faster than people think. The "Postgres is slow for vectors" thing is from the IVFFlat era. HNSW changed that Recall: Qdrant: 99.2% Milvus: 99.0% pgvector: 98.5% Pinecone: ~95% (can't tune HNSW params) Monthly cost (1M vectors): pgvector on Neon: $30-150 Pinecone Serverless: $50-80 Qdrant Cloud: $65-102 pgvector on RDS: $260 We use pgvector on Neon in production. Replaced Pinecone and RDS, latency dropped from 200ms to 80ms submitted by /u/K3NCHO [link] [comments]