Letta vs Zep

Pick two tools from the same category to compare side-by-side.

	Letta Stateful agent memory framework (formerly MemGPT); core+archival tiers.	Zep Temporal knowledge graph memory for agents (Graphiti under the hood).
Category	memory	memory
Vendor type	open source	hybrid
Pricing	freemium	freemium
Strengths	+ Mature memory architecture (core/archival/recall tiers) + Open source with managed option + Designed for long-lived agents	+ Temporal knowledge-graph model + Strong for time-sensitive domains + Managed and self-hostable
Tradeoffs	− More setup overhead than simple memory layers	− Graph model is more complex to reason about
Used in stacks	0	6