Neo4j's GraphRAG stack is a set of tools — the neo4j-graphrag Python package, the Graph Data Science (GDS) library, and the LLM Knowledge Graph Builder — for turning unstructured text into a queryable
OpenSearch is the Apache 2.0-licensed search and analytics engine that AWS forked from Elasticsearch 7.10.2 in 2021, after Elastic relicensed Elasticsearch under the Server Side Public License. Govern
Elasticsearch handles three distinct retrieval mechanisms inside a single query layer: lexical scoring against an inverted index (BM25), approximate nearest-neighbor search over dense vector embedding
