Install LangChain

To install the LangChain package:

npm

npm install langchain @langchain/core

LangChain provides integrations to hundreds of LLMs and thousands of other integrations. These live in independent provider packages. For example:

npm

# Installing the OpenAI integration
npm install @langchain/openai
# Installing the Anthropic integration
npm install @langchain/anthropic

See the Integrations tab for a full list of available integrations.

---

Edit the source of this page on GitHub.

Connect these docs programmatically to Claude, VSCode, and more via MCP for real-time answers.