Letta

AI research lab and platform for stateful agents with long-term memory

Aboutletta.com

Letta is an AI research lab and platform for stateful agents that remember, learn, and improve over time. It offers the Letta API, an agent development environment, and Letta Code, a coding agent installed from npm. The lab publishes research on memory models.

Install

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

For an agent

Use it when an agent must keep memory across many sessions. Plan how users see and delete what the agent remembers.

Why it is here. It is a leading platform for agent memory.

Install command, framework, licence and component list.

Notable for

Stateful agents
Memory research
Letta Code

Provenance

Verified 2026-10-09. HTTP 200. https://www.letta.com/ (HTTP 200, page fetched 2026-10-09), depo.zip listing https://www.depo.zip/tools/j571d06h3jfa2njwmbsbnjbp0n7t9p15

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