PathSeer filtered ANN algorithm ships in Weaviate 1.40
Filtered vector search usually forces a trade-off between pre-filtering and post-filtering, and PathSeer removes the need to pick a side or tune per query. Teams running production RAG or hybrid search can enable it on existing HNSW collections with a one-line config change and no reindexing. Weaviate is open source, so the implementation can be compared directly against alternatives like Qdrant's filtered search handling.
