Letta

Build and deploy highly autonomous, long-running AI agents locally or in the cloud.

Visualize an agent's memory, reasoning steps, and tool calls through a no-code UI.

Create AI agents that continually learn from experience and retain long-term memory across different LLMs.

Utilize Letta's advanced memory systems across any development framework.

Create, deploy, and manage AI agents at scale with production applications backed by agent microservices and REST APIs.

Access and integrate agents into applications through ready-to-use REST API endpoints, complete with authentication and identities.

Scale agent solutions from initial prototypes to millions of agents on the same stack, ensuring data and state safety.

Program and connect agents to applications using Letta’s APIs, SDKs, and integrations across various frameworks.

Enable agents to intelligently manage their own context windows by reading and writing to memory blocks and define rules to constrain behavior.

Define custom tools executable in cloud sandboxes and integrate pre-built tools via APIs and SDKs.

Utilize an open-source evaluation framework to systematically test stateful agents, compare models, and prevent regressions.

Version agent designs using templates, apply upgrades to existing agents, and roll back changes when needed.