Claude Haiku 4.5 is now available on Letta Cloud.

Agents that redesign their own memory architecture.

We just shipped the memory tool in Letta—agents can now autonomously create, modify, and delete their own memory blocks.

We built a self-improving agent from scratch to demo it in our new YouTube video.

youtu.be/0nfNDrRKSuU

Letta Cloud now provides Anthropic's `memory` tool, enabling agents to dynamically manage their own memory architecture. Agents can create, delete, view, and modify memory blocks as they learn.

In the video below, we use the memory tool in the ADE with Sonnet 4.5 to create a new memory block.

Archival memory is how Letta agents store arbitrary pieces of text they can recall for later use.

In this deep-dive video, you'll see how to build an AI agent designed for long-term memory: The Archivist.

Learn more: youtu.be/hFNWhrXukc0

Replacing Timber the dog with superintelligence

Did you know that you can copy any page on docs.letta.com as a markdown document?