Letta Code Letta Code
Letta Code is a memory-first, open-source coding agent harness that provides persistent state, identity, and the ability for agents to learn and adapt over long time horizons. Unlike stateless agents, it features a tiered memory architecture—core, archival, and recall—allowing agents to retain project context, preferences, and coding patterns across independent sessions.
Launched the desktop app in April 2026, transitioned to a unified 'Channels' integration system, and restructured pricing around the Letta Code experience.
As of
- Persistent tiered memory system (core, archival, and recall)
- Self-improving agents that rewrite their own memory and system prompts
- Model-agnostic architecture supporting Claude, GPT, Gemini, and local models
- Extensible skills system via Markdown-based modules and GitHub integration
- Multi-environment support including CLI, desktop app, and remote cloud sandboxes
Developers who need agents to retain project-specific knowledge, coding conventions, and architectural context across multiple days or weeks of work.
Users seeking fire-and-forget, one-off task automation or those who prefer lightweight, stateless tools where persistent memory adds unnecessary overhead and complexity.
Free tier includes up to 3 managed agents and BYOK (bring-your-own-key) support. The Pro plan is $20/month, allowing up to 20 stateful agents and including Letta Auto usage quotas with pay-as-you-go overages.
Letta Code is the most mature open-source solution for developers demanding long-term stateful AI assistance, though its memory-first complexity requires more configuration than standard stateless coding assistants.
Is Letta Code free?
Letta Code is Freemium. Free tier includes up to 3 managed agents and BYOK (bring-your-own-key) support. The Pro plan is $20/month, allowing up to 20 stateful agents and including Letta Auto usage quotas with pay-as-you-go overages. Check the official site for current plans.
What is Letta Code best for?
Developers who need agents to retain project-specific knowledge, coding conventions, and architectural context across multiple days or weeks of work.
Who makes Letta Code?
Letta Code is developed by Letta. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
Sign in with GitHub or Google to Zap tools, vote, and get a README badge showing your stack.
Content on this page is AI-generated. Please verify details with the vendor's website for accuracy.