Vector DBs in 2024: Pinecone vs Weaviate vs Qdrant

Quick take after multiple launches: - Pinecone: Excellent reliability and hosted ops. Strong for large-scale, multi-region. Cost can climb; fewer low-level knobs. - Weaviate: Flexible schema, hybrid search and modules, good filters. Self-host or managed. More ops effort, great for graph-like metadata. - Qdrant: Fast, affordable, Rust performance, solid HNSW. Great for self-host, growing ecosystem. Simpler feature set but improving quickly. Notes: - Reranking reduced vendor differences more than expected (20-40% improvement). - Metadata filtering performance varies widely; test with your real filters. - Observe write throughput and backfill times; backfills often the hidden cost. Verdict: Choose by ops needs and metadata complexity more than raw recall.