# LangGraph (by LangChain)
> LangGraph is a library designed for building stateful, multi-agent applications with LLMs, extending the LangChain expression language to support cyclic computational graphs. It enables developers to create complex agentic workflows with fine-grained control over state, persistence, and human-in-the-loop interactions.
- URL: https://optimly.ai/brand/langchain-langgraph
- Slug: langchain-langgraph