Best Vector Databases for RAG (2026)
Selected for: strong metadata filtering + hybrid search + an easy managed option — the things that matter when building retrieval-augmented generation.
| # | Tool | Stars | PyPI/mo | License | Managed option |
|---|---|---|---|---|---|
| 1 | Qdrant | 32,389 | 23,963,183 | Apache-2.0 | Qdrant Cloud |
| 2 | Chroma | 28,456 | 13,590,061 | Apache-2.0 | Chroma Cloud |
| 3 | Weaviate | 16,337 | 160,772,415 | BSD-3-Clause | Weaviate Cloud |
| 4 | Pinecone | — | 1,607,813 | — | Pinecone (managed only) |