ECC vs letta
A neutral, constraint-first comparison - live GitHub stats and typed relationships, not marketing.
| ECC | letta | |
|---|---|---|
| Tagline | The agent harness performance optimization system | Platform for stateful agents with advanced memory and self-improvement capabilities. |
| Stars | 227k | 24k |
| Forks | 35k | 2.5k |
| Open issues | 73 | 48 |
| Language | JavaScript | Python |
| License | MIT | Apache-2.0 |
| Last pushed | Jul 6, 2026 | Jul 3, 2026 |
| Categories | Developer Tools, AI Agents | AI Agents |
ECC
ECC is a comprehensive AI agent system for optimizing skills, instincts, memory, security, and development processes across various AI tool harnesses.
JavaScript
letta
Letta is a platform designed to build AI agents that can operate in a persistent, memory-rich environment, enabling them to learn from past interactions and improve over time. It supports both local execution via CLI tools and integration into applications using the SDK. Agents can run on Letta's server or self-hosted infrastructure.
Python