Memory Without RAG: The Real Architecture

Logosofia no Dia a Dia · Apr 13, 2026 · 28m

Agent memory systems like mem0, Letta, Zep, and LangMem are built on fundamentally different architectures than retrieval-augmented generation — but the marketing language obscures what actually matters. This episode breaks down the real engineering decisions: how LLM-extracted fact stores differ from temporal knowledge graphs, why context-window-first approaches with external overflow change the game, and which pairings actually work in production. From mem0's deduplication pipeline to Letta's OS-inspired memory hierarchy and sleep-time compute, we examine the architectural divisions that…