Letta focuses on stateful agents but has limitations. Here are the best alternatives for persistent AI memory.
Letta focuses on stateful agents but requires significant infrastructure. Several alternatives offer simpler setup with comparable memory features.
Squish (local-first, free, MCP-native), Mem0 (cloud with free tier), Zep (graph memory), and Engram (ultra-lightweight) each solve agent memory differently.
Prioritize local-first if privacy matters. Choose MCP-native if you want plug-and-play integration. Pick based on your stack and team size.