The 6 Best AI Agent Memory Frameworks You Should Try in 2026

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A curated overview of six frameworks for implementing persistent memory in AI agents: Mem0, Zep, LangChain Memory, LlamaIndex Memory, Letta, and Cognee. Each framework is described with its key capabilities covering long-term storage, semantic retrieval, context window management, and knowledge graph approaches. Practical project ideas are included to help developers get hands-on experience with each tool.

6m read timeFrom machinelearningmastery.com
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Table of contents
Introduction1. Mem02. Zep3. LangChain Memory4. LlamaIndex Memory5. Letta6. CogneeWrapping Up

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