Sign in Submit site

cpacker/MemGPT

github.com/letta-ai/letta AI Agents & Automation Open-source projectOpen source

Letta, formerly MemGPT, supports stateful agents with memory that can learn and improve over time.

Visit cpacker/MemGPT 24 alternatives
github.com/letta-ai/letta
cpacker/MemGPT homepage screenshot

About cpacker/MemGPT

Letta, formerly MemGPT, is an open-source platform for building stateful AI agents whose memory can learn and improve over time. It installs from npm as @letta-ai/letta-code and can be used through an interactive terminal UI, a local or self-hosted App Server, desktop apps for macOS, Windows and Linux, a browser client at chat.letta.com (including mobile), messaging channels such as Slack, Telegram and Discord, and an Agent SDK for building agents into TypeScript applications. Letta Cloud is offered for keeping agent memory, identity and conversations available across computers. The project is Apache-2.0 licensed and actively developed; current source code lives in the letta-ai/letta-code repository, while the archive branch in this repository holds the retired Letta V1 API server, with old tags and releases kept for reproducibility.

Key features

  • Stateful agents with memory that can learn and self-improve over time
  • Installable from npm as @letta-ai/letta-code
  • Interactive terminal UI launched with the letta command
  • App Server for local or self-hosted agents
  • Desktop apps for macOS, Windows and Linux
  • TypeScript Agent SDK, plus Slack, Telegram and Discord channels
Best for: Developers and teams building AI agents that need persistent memory across sessions, whether run locally, self-hosted or through Letta Cloud.
Good for
  • Open source under the Apache-2.0 license
  • Multiple ways to run and reach agents: terminal, desktop, browser, self-hosted server and chat channels
  • Letta Cloud is available to keep memory, identity and conversations available across computers
Watch out for
  • Pricing is not stated in the source material
  • Current source code lives in the separate letta-ai/letta-code repository; this repository's archive branch holds only the retired Letta V1 API server
  • Using Letta Cloud or external chat channels means agent data may be stored or processed outside your own machine

cpacker/MemGPT at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
Linux, macOS, Windows
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026
open sourcelinuxai agents

cpacker/MemGPT alternatives

Tools and sites you could use instead, ranked by how closely they match.

All 24 alternatives

Popular in AI Agents & Automation

Well-known listings from the same topic.

All 313
Simsim.aiMaya AI.smartmaya.aiMakeformsmakeforms.ioAgent Skillsagentskills.ioGenFuse AIgenfuseai.comBeambeam.ai
Related topicsAI Business ToolsAI Image GeneratorsAI Infrastructure & MLOpsAI Data & AnalyticsAI Chatbots & AssistantsAI Voice & AudioAI Writing ToolsAI Video Generators

cpacker/MemGPT FAQ

How do I install Letta?
Install it from npm with npm install -g @letta-ai/letta-code, then launch the interactive terminal UI with the letta command.
Where is the current source code?
Current source code lives in letta-ai/letta-code. The archive branch in this repository contains the retired Letta V1 API server; existing tags and releases remain available for reproducibility, but active projects should use the current source.
Do I have to use Letta Cloud?
No. Agents can be run locally or self-hosted with letta server, or used through the desktop apps and browser client. Letta Cloud is an option for keeping agent memory, identity and conversations available across computers.
Is something wrong or out of date?

Tell us and an editor will check it.

Own this website?

Claim the listing and suggest updates yourself. An editor checks every claim first.

Claim this listing

Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 11, 2026 · How we rank