🧰
Open Source Toolkit

Know how to use it before you click: online, self-hosted, desktop, CLI

中文

Letta

letta-ai/letta
Library Not a standalone app — install it into your own project and call it from code.

Platform for stateful agents: AI with advanced memory that can learn and self-improve over time.

Agent memoryAI agentSelf-hostable
Letta website screenshot

From the README

Letta (f.k.a. MemGPT) is actively developed. The current source code lives in letta-ai/letta-code, which includes the agent harness, interactive terminal UI, App Server, channels, and the runtime used by the desktop and web apps.

Stars
★ 24.9k
Language
Python
License
Apache-2.0
Last updated
2026-09-10
Category
AI agents
Section
General