Letta Agent | Personalized Agent That Remembers and Learns

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PERSISTENT AGENTS }}}

Custom agents that live forever

Build your own deeply personalized agents, each with their own unique identity and expertise. Supports custom skills, harness modifications, and tools.

CONTINUAL LEARNING }}}

Best-in-class memory & learning

Agents self-improve through sleep-time compute, learning without needing model updates. All context (skills, prompts, etc.) is git-tracked through MemFS.

CHANNELS }}}

Works where you work

Communicate with agents through Slack, Discord, Telegram, or custom channels. Collaboratively teach and direct agents where your team already works.

SCHEDULED TASKS }}}

Proactive and understands time

Ask agents to work proactively, monitor results, or run tasks on a schedule. Create schedules yourself or let agents set their own, and review past runs anytime.

RUN ON ANY DEVICE }}}

Run on remote devices

Connect your own device, sandbox, or VM as a remote environment. Agents can work across multiple devices simultaneously.

MULTI-MODEL MEMORY }}}

Bring your own model and subscription plans

Works with OpenAI Codex, Z.AI, and other subscription plans, or with your own API keys. Agents transfer across models without memory loss.