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Memory · Letta

Letta

Stateful agents with structured memory. Successor to MemGPT.

OPEN SOURCEAPICLImacOSWindowsLinux

Open-source framework for building stateful agents — memory blocks, context-window management, tool-use primitives baked in. Useful as a reference architecture for long-running agents.

Model support

BYO key / model

  • Claude
  • GPT
  • Local

Where it runs

  • API
  • CLI
  • macOS
  • Windows
  • Linux

Tags

  • #memory
  • #stateful
  • #agents
  • #open-source
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    Long-term memory layer for AI agents. Self-hostable.

    Persistent memory store + retrieval pipeline for agent applications. Handles per-user/per-session/per-agent scope cleanly; pairs with OpenAI, Anthropic, and local models.

    • memory
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