https://cognilium.ai/tech-news/graphrag-vs-flat-vector-rag-2026-default Cognilium AI en 2026-06-09T09:22:24.421Z GraphRAG vs Flat-Vector RAG: Why 2026 Is the Year Graph Retrieval Graduates to Default GraphRAG, RAG, Knowledge Graphs, Neo4j, Hybrid Retrieval, LLM Engineering Blog