[@langchain/langgraph](https://js.langchain.com/docs/concepts/architecture/#langchainlanggraph): LLM should read this page when needing to understand LangChain's framework structure, looking for package dependencies, or planning integration implementations. (Overview of LangChain's architecture showing the hierarchical organization with @langchain/core providing base abstractions, langchain containing cognitive architecture components, integration packages for third-party services, @langchain/community for community-maintained integrations, @langchain/langgraph for orchestration, and LangSmith for debugging and monitoring LLM applications.)

