LongMemEval

ContextNest vs Mem0 vs Zep is the wrong framing: these three are complementary layers of the same memory stack, not competing products. Zep provides session log memory, Mem0 handles personalization memory, and ContextNest governs corporate knowledge — and production agents typically need all three. A single memory database is the most common architectural pitfall, because it cannot serve session continuity, user personalization, and compliance-ready knowledge at the same time. This guide dissects each layer, compares them head-to-head, and shows how to stack them. ...