[How to add thread-level persistence to your graph](https://langchain-ai.github.io/langgraph/how-tos/persistence): LLM should read this page when implementing thread-based conversation memory in LangGraph or when needing to persist state across multiple user interactions. This page explains how to add thread-level persistence to LangGraph StateGraphs using the MemorySaver checkpointer, allowing conversations to maintain context across multiple interactions with thread_id management.

