LangMem
LangChain library for long-term memory extraction and prompt optimization in agents.
Visit LangMem →Related Memory tools
- Mem0 — Memory layer that extracts and retrieves user/agent facts across sessions.
- Letta (MemGPT) — Stateful agents with self-editing tiered memory, from the MemGPT research.
- Zep / Graphiti — Temporal knowledge graph for agent memory that tracks how facts change over time.
- Cognee — Builds knowledge graphs plus vectors from your data as agent memory.
- MCP Memory server — Reference knowledge-graph memory server any MCP client can use.
- Anthropic memory tool — Claude API tool for storing and retrieving information in a file directory across conversa
All Memory tools → · Best memory and evaluation tools for AI agents