langchain vs letta
A neutral, constraint-first comparison - live GitHub stats and typed relationships, not marketing.
| langchain | letta | |
|---|---|---|
| Tagline | The agent engineering platform. | Platform for stateful agents with advanced memory and self-improvement capabilities. |
| Stars | 141k | 24k |
| Forks | 23k | 2.5k |
| Open issues | 405 | 48 |
| Language | Python | Python |
| License | MIT | Apache-2.0 |
| Last pushed | Jul 7, 2026 | Jul 3, 2026 |
| Categories | AI Agents | AI Agents |
langchain
LangChain is an open-source framework for building agents and LLM-powered applications. It aids in chaining interoperable components and third-party integrations to simplify AI application development.
Python
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