{"type": "article", "title": "Agent Memory Systems and Knowledge Graphs: Letta, Mem0, Graphiti, and Cognee", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/agent-memory-systems-and-knowledge-graphs-letta-mem0-graphiti-and-cognee", "original_source": "https://codepointer.substack.com/p/agent-memory-systems-and-knowledge", "published": "2026-06-13T11:32:46+00:00", "accessed": "2026-06-13", "id": "agent-memory-systems-and-knowledge-graphs-letta-mem0-graphiti-and-cognee"}