Two strong open-source vector DBs with different design tradeoffs.
| Weaviate | Qdrant | |
|---|---|---|
| Language | Go | Rust |
| Hybrid search | Native BM25 | Via sparse vectors |
| Filtering | Strong | Excellent performance |
| Modules | Many built-in | Lean core |
You want batteries-included (hybrid search, embeddings modules).
You want max speed and tight filtering, will bring your own embedding pipeline.
Weaviate when you want an opinionated system. Qdrant when you want a performance primitive you build around.