Letta Code: The First Memory-Persistent Coding Agent

Every developer knows the frustration: you spend 20 minutes explaining your project structure to Claude or Copilot, get some decent code, then start a new session and have to explain everything again. The AI forgets your naming conventions, your architectural decisions, your preferred patterns — everything.

Letta Code changes this completely.

Memory-First Architecture Changes Everything

Unlike traditional session-based coding assistants that start fresh every time, Letta Code builds a persistent memory of your codebase, preferences, and development patterns. It's built on the Letta API (formerly MemGPT), which gives AI agents true long-term memory rather than just context windows.

This isn't just "chat history" — it's structured knowledge about how you work. The agent learns that you prefer functional patterns over classes, remembers your custom utility functions, and understands your project's domain logic. Over weeks of collaboration, it becomes genuinely useful in ways that session-based tools can't.

From Transactional to Collaborative

The experience feels fundamentally different. Instead of re-explaining your setup each time, you can jump straight into "add user authentication using our existing patterns" and the agent knows what that means for your specific codebase.

It supports multiple AI models (Claude, GPT-4, etc.) behind the same persistent memory layer, so you're not locked into one provider. The open-source codebase means you can see exactly how memory persistence works and modify it for your needs.

Built by the Memory Specialists

The team behind Letta Code created the original MemGPT research that showed how to give AI agents persistent memory beyond context limits. They've been working on agent memory problems longer than almost anyone, and it shows in the architecture.

With 2,100 GitHub stars and active development, this represents the first serious attempt at solving AI coding's biggest friction point. The infrastructure for truly collaborative AI development is finally here.

Try Letta Code