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letta

From public sources

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

AI toolCategory: AI AgentsOpen sourcedata checked Oct 15, 2026
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Overview

  • ai
  • ai-agents
  • llm
  • llm-agent

Installation

Commands are shown, never run by the marketplace. Check them against the official documentation.
  • Official websiteFrom public sourcesfrom catalog metadata
    docs.letta.com/ ↗
  • Build from sourceFrom public sourcesfrom catalog metadata

    Build from source: no validated build recipe — follow the repository instructions.

    github.com/letta-ai/letta ↗

Compatibility

Unknown means no evidence was found — not that the product is incompatible.
PlatformStatusArchitectureEvidenceConfidence
WindowsUnknown———
macOSUnknown———
LinuxUnknown———
Web browserUnknown———
Server / self-hostedUnknown———
Container (OCI)Unknown———

Releases

checked Oct 29, 2026
v0.16.8LatestMay 14, 2026Official source ↗

Files in 0.16.8

This release has no attached files.

Release history

Quality profile

algorithm quality-v1.0 · assessed Oct 15, 2026
Quality Score89
Risk Score0
Confidence 1.00
Quality Score and Risk Score are different measures. A high score does not guarantee safety.

Score components

Maintenance · 2016
last activity 35 days ago
Documentation · 1511
README 1574 chars, description present
Ready to use · 1515
install instructions: yes; releases: yes
Metadata · 1010
4/4 of description, homepage, license, topics
Releases · 1010
10 release(s), latest 154 days ago
Category confidence · 107
classifier confidence 0.65
Adoption · 1010
25156 stars (log-dampened, 10k = max)
License clarity · 55
SPDX Apache-2.0
Community · 55
issues enabled, 2648 forks

License

Apache-2.0
Known licensefrom the repository host

This is the catalog policy status, not legal advice.

Sources

github.com/letta-ai/lettaPrimary★ 25,156 starslast activity Sep 10, 2026Primary repository · Confidence 1.00

Reviews

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README

From letta-ai/letta · license Apache-2.0 · fetched Oct 29, 2026

Letta

Build stateful agents with memory that can learn and improve over time.

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.

Get started

Install Letta from npm:

npm install -g @letta-ai/letta-code

Launch the interactive terminal UI:

letta

Run the App Server for local or self-hosted agents:

letta server

You can also use Letta through:

See the Letta documentation for current installation, development, and deployment instructions.

Historical source

The archive branch contains the retired Letta V1 API server. Existing tags and releases remain available for reproducibility, but active projects should use the current source.

Open the repository ↗