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Letta (formerly MemGPT)

Platform for building stateful AI agents with memory.

AI AgentOpen SourceGrowing
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What is Letta (formerly MemGPT)?

Letta (formerly MemGPT) is platform for building stateful AI agents with memory.

About

Letta is a platform designed for creating stateful AI agents that possess advanced memory capabilities, allowing them to learn and self-improve over time. It is suitable for developers looking to integrate intelligent agents into their applications or run them locally. Key features include a CLI tool for local execution and a comprehensive API for application integration.

Strengths

  • Supports advanced memory and continual learning.
  • Model-agnostic with recommendations for optimal performance.
  • Active open-source community with extensive documentation.

Limitations

  • Requires Node.js 18+ for local setup.
  • May have a learning curve for new users unfamiliar with AI agents.
  • Limited to the capabilities of the underlying models used.

Use Cases

Building intelligent coding assistants that remember user preferences.Creating personalized chatbots that adapt over time.Developing agents for automated web searches with memory of past queries.

Integrations

OpenAI GPT-5.2Node.jsPython