> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Install LangChain

To install the LangChain package:

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  npm install langchain @langchain/core
  # Requires Node.js 20+
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  pnpm add langchain @langchain/core
  # Requires Node.js 20+
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  yarn add langchain @langchain/core
  # Requires Node.js 20+
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  bun add langchain @langchain/core
  # Requires Bun v1.0.0+
  ```
</CodeGroup>

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

<CodeGroup>
  ```bash npm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # Installing the OpenAI integration
  npm install @langchain/openai
  # Installing the Anthropic integration
  npm install @langchain/anthropic
  ```

  ```bash pnpm theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # Installing the OpenAI integration
  pnpm install @langchain/openai
  # Installing the Anthropic integration
  pnpm install @langchain/anthropic
  ```

  ```bash yarn theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # Installing the OpenAI integration
  yarn add @langchain/openai
  # Installing the Anthropic integration
  yarn add @langchain/anthropic
  ```

  ```bash bun theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
  # Installing the OpenAI integration
  bun add @langchain/openai
  # Installing the Anthropic integration
  bun add @langchain/anthropic
  ```
</CodeGroup>

<Tip>
  See the [Integrations tab](/oss/javascript/integrations/providers/overview) for a full list of available integrations.
</Tip>

Now that you have LangChain installed, you can get started by following the [Quickstart guide](/oss/javascript/langchain/quickstart).

<Tip>
  Set up [LangSmith](https://smith.langchain.com?utm_source=docs\&utm_medium=cta\&utm_campaign=langsmith-signup\&utm_content=oss-langchain-install) tracing to debug your first LangChain app. Follow the [tracing quickstart](/langsmith/trace-with-langchain) to get started.
</Tip>

***

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