Letta

Letta is an AI platform for building advanced stateful AI agents with persistent memory and transparent reasoning. This developer-focused solution enables the creation of conversational AI systems that can remember past interactions across sessions, maintain context, and demonstrate explainable reasoning processes. Unlike traditional stateless LLMs, Letta agents feature long-term memory capabilities that create more natural and personalized interactions, while its model-agnostic design provides flexibility to work with any language model. Developers can integrate custom tools, external databases and APIs to automate complex workflows, while the platform's "white box" approach separates internal reasoning from user-facing communication for improved debugging and transparency. Organizations choose Letta when building enterprise chatbots, virtual assistants or research agents that require persistent context, personalization, and scalable deployment in production environments.