About Letta
Letta is an open source platform for building stateful AI agents that remember past interactions. Its agents keep memory across sessions, so they can build on earlier work.
What it does
Letta agents store their context and memory in a structured form that persists between sessions. Memory is one of the main focuses of the project, which is also tied to ongoing research on how agents learn over time. The command-line tool can be installed from npm.
Key features
- Agents with long-term memory
- Memory that persists across sessions
- Command-line install through npm
- Research on agent memory
- Open source code under Apache-2.0
Who it's for
Developers who want agents that keep context over weeks or months, and researchers who study how agent memory works.
Pricing and good to know
The code is open source under the Apache-2.0 license. Check the website for any hosted plans or product terms before you depend on them. Persistent memory can hold personal details, so plan how data is stored and deleted.
Highlights
- Agents with long-term memory
- Memory that persists across sessions
- Command-line install through npm
- Research on agent memory
- Open source code under Apache-2.0
