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Architecture May 18, 2026 1 min
Part ofAgentic AIClaude APIAI Engineering

Your agent has no memory. That is the problem.

Three memory types fix this permanently. Context is temporary. Memory is permanent.

Most AI agents forget the moment a session ends. Three memory layers fix that for good: implicit (baked into weights), explicit (RAG and vector DBs), and agentic (state that survives across sessions). A one-glance visual companion to the long-form post on the three paradigms of LLM memory.

Tags#Memory#AgenticMemory#RAG#VectorDB#Architecture#AIAgents

Key takeaways

  • 1Most AI agents forget the moment the session ends. The window is not memory.
  • 2Three memory types fix this permanently: implicit (inside the weights), explicit (RAG and vector DBs), and agentic (persists across tasks and sessions).
  • 3Implicit memory holds general facts and stable knowledge. No retrieval needed.
  • 4Explicit memory holds dynamic data, user docs, and anything you need to search. RAG and vector DBs sit here.
  • 5Agentic memory is the layer most teams skip. It is what makes multi-session tasks, personalisation, and team agents actually work.
  • 6Context is temporary. Memory is permanent. Give your agent a brain, not just a window.