Blog/Tag
12 articles tagged Vector search, newest first. Each one is sourced and written for people who ship.
Retrieval & search
·9 min read
How to pick an embedding model for RAG in 2026: what MTEB and RTEB tell you, hosted vs open weights, prices, dimensions, and a one-week bake-off.
Retrieval & search
·9 min read
How RAG assistants leak documents and how to stop it: ACLs on every chunk, pre-filtering, row-level security in pgvector, permission sync and leak tests.
Retrieval & search
·5 min read
How binary and int8 quantization and Matryoshka truncation shrink vector indexes 4 to 32 times, what they cost in recall, and how rescoring wins it back.
Retrieval & search
·8 min read
Vector search in Elasticsearch and OpenSearch: kNN and filters, BBQ and binary quantization, RRF hybrid search, GPU builds, and AGPL vs Apache licensing.
Retrieval & search
·9 min read
LanceDB review: an Apache-2.0 embedded vector library with IVF and HNSW index choices, hybrid search with rank fusion, and what the Enterprise tier adds.
Retrieval & search
·10 min read
pgvector 0.8.7: iterative scans for filtered search, HNSW and IVFFlat, binary quantisation at 100M vectors, and the CVE behind an index-build patch.
Retrieval & search
·10 min read
Mem0: facts extracted from every turn, the April 2026 benchmark table and its platform-only caveat, four cloud tiers, and what self-hosting leaves out.
Retrieval & search
·10 min read
Milvus 3.0.2 is the most complete open-source vector database and the heaviest to run: architecture, hybrid search, costs, and where not to use it.
Retrieval & search
·10 min read
Chroma is an Apache-2.0 vector database for embedded, single-node or cloud use. Where it is pleasant, and where its best search is cloud-only.
Retrieval & search
·11 min read
Pinecone review: read units scale with namespace size, schemas are fixed at creation, and when self-hosting is the better buy.
Retrieval & search
·10 min read
Weaviate: hybrid BM25 and vector search in one query, HNSW and disk-based HFresh, quantisation, a built-in MCP server, and what licence keys now cover.
Retrieval & search
·10 min read
A review of Qdrant: filterable HNSW, four quantisation methods, the memory tiers in v1.19 and the operations nobody publishes any more.