Context Constitution
Today we're releasing the Context Constitution: a set of principles governing how AI agents manage context to learn from experience.
Memory-first agents that continually learn
Build agents that can be taught through language and improve from experience
Persistent agents instead of stateless sessions
Build your own deeply personalized agents, each with their own unique identity and expertise, designed to evolve as they learn over time.
Always improving and learning
Background memory agents (dream agents) transform your prompts, context, and skills over time. View your agent's memory in the memory palace.
Own your memory and port it across models
Easily transfer your agent's memories, conversations, and experiences between models across any provider.
Chat from any device, deploy on any environment
Remote control agents running on any machine. Teleport agents across machines while keeping their memory and context intact.
AI Research
Building machines that learn
Letta is an AI lab building machines the learn: persistent agents with the ability to continuously learn and adapt from their own experience. Born from MemGPT at UC Berkeley's Sky Computing Lab, and backed by leaders in AI research and infrastructure.
Research blog }
Introducing Context Repositories: Git-based Memory for Coding Agents
We're introducing Context Repositories, a rebuild of how agent memory works, using programmatic context management and git-based versioning.
Continual Learning in Token Space
At Letta, we believe that learning in token space is the key to building AI agents that truly improve over time.
Skill Learning: Bringing Continual Learning to CLI Agents
Today we're releasing Skill Learning, a way to dynamically learn skills through experience.
Context-Bench: Benchmarking LLMs on Agentic Context Engineering
Context-Bench evaluates how well language models chain file operations, trace relationships, and manage long-horizon information retrieval.
Sleep-time Compute: AI that Dreams
We introduce sleep-time compute, a technique that allows agents to reason about context during idle time rather than at inference.
Life-long agents that learn, accessible from anywhere
Letta Code
Create your own agent that remembers and learns. Try for free with your own API keys or existing coding plans.
