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@letta-ai

Letta

The platform for stateful AI agents
README.md

Hello World 👾

Letta Logo

Letta adds state to your LLMs to give them advanced reasoning capabilities and transparent long-term memory. You can use Letta to create powerful LLM agents that can reason about their past interactions, learn from them, and improve their behavior over time.

  • Download the Letta open source framework on GitHub
  • Try the Agent Development Environment (ADE) to build stateful agents in a no-code UI
  • Read the Letta docs to learn about the ADE, Python and TypeScript/Node.js SDKs, Vercel AI SDK integrations and more
  • Join our team and other Letta users and developers on our Discord server

Letta is made with ❤️ by our team in San Francisco (join us!) and over 100 individual contributors from around the world.

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  1. letta letta Public

    Letta is the platform for building stateful agents: open AI with advanced memory that can learn and self-improve over time.

    Python 20.1k 2.1k

  2. letta-code letta-code Public

    The memory-first coding agent

    TypeScript 699 73

  3. agent-file agent-file Public

    Agent File (.af): An open file format for serializing stateful AI agents with persistent memory and behavior. Share, checkpoint, and version control agents across compatible frameworks.

    Python 978 86

  4. letta-chatbot-example letta-chatbot-example Public

    An example chatbot application built on the Letta API, which makes each chatbot a stateful agent (agent with memory) under the hood.

    TypeScript 91 39

  5. letta-node letta-node Public

    A TypeScript SDK for accessing the Letta API

    TypeScript 38 7

  6. letta-python letta-python Public

    A Python SDK for accessing the Letta API

    Python 47 9

Repositories

Showing 10 of 36 repositories
  • letta-code Public

    The memory-first coding agent

    letta-ai/letta-code’s past year of commit activity
    TypeScript 699 Apache-2.0 73 20 13 Updated Dec 21, 2025
  • letta-node Public

    A TypeScript SDK for accessing the Letta API

    letta-ai/letta-node’s past year of commit activity
    TypeScript 38 Apache-2.0 7 0 3 Updated Dec 20, 2025
  • letta-python Public

    A Python SDK for accessing the Letta API

    letta-ai/letta-python’s past year of commit activity
    Python 47 Apache-2.0 9 4 2 Updated Dec 20, 2025
  • letta Public

    Letta is the platform for building stateful agents: open AI with advanced memory that can learn and self-improve over time.

    letta-ai/letta’s past year of commit activity
    Python 20,116 Apache-2.0 2,105 23 53 Updated Dec 18, 2025
  • letta-evals Public

    Evaluation kit for testing Letta AI agents

    letta-ai/letta-evals’s past year of commit activity
    Python 23 Apache-2.0 0 1 1 Updated Dec 18, 2025
  • letta-discord-bot-example Public

    An example Discord chatbot built on the Letta API, which uses a stateful agent (agent with memory) under the hood.

    letta-ai/letta-discord-bot-example’s past year of commit activity
    TypeScript 33 MIT 13 4 0 Updated Dec 17, 2025
  • co Public

    Your thinking partner.

    letta-ai/co’s past year of commit activity
    TypeScript 9 2 1 0 Updated Dec 16, 2025
  • letta-telegram Public

    A Modal application for serving a Letta agent on Telegram.

    letta-ai/letta-telegram’s past year of commit activity
    Python 16 4 0 0 Updated Dec 10, 2025
  • skills Public

    A shared repository for skills.

    letta-ai/skills’s past year of commit activity
    Python 18 2 0 3 Updated Dec 10, 2025
  • example-social-agent Public

    An example of stateful AI agent powered by Letta and Gemini 3 pro.

    letta-ai/example-social-agent’s past year of commit activity
    Python 19 3 0 0 Updated Dec 6, 2025
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