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*   OpenAI

On this page

OpenAI
======

Here's how you can initialize an `OpenAI` LLM instance:

tip

See [this section for general instructions on installing integration packages](/v0.2/docs/how_to/installation#installing-integration-packages).

*   npm
*   Yarn
*   pnpm

    npm install @langchain/openai

    yarn add @langchain/openai

    pnpm add @langchain/openai

tip

We're unifying model params across all packages. We now suggest using `model` instead of `modelName`, and `apiKey` for API keys.

    import { OpenAI } from "@langchain/openai";const model = new OpenAI({  model: "gpt-3.5-turbo-instruct", // Defaults to "gpt-3.5-turbo-instruct" if no model provided.  temperature: 0.9,  apiKey: "YOUR-API-KEY", // In Node.js defaults to process.env.OPENAI_API_KEY});const res = await model.invoke(  "What would be a good company name a company that makes colorful socks?");console.log({ res });

If you're part of an organization, you can set `process.env.OPENAI_ORGANIZATION` to your OpenAI organization id, or pass it in as `organization` when initializing the model.

Custom URLs[​](#custom-urls "Direct link to Custom URLs")
---------------------------------------------------------

You can customize the base URL the SDK sends requests to by passing a `configuration` parameter like this:

    const model = new OpenAI({  temperature: 0.9,  configuration: {    baseURL: "https://your_custom_url.com",  },});

You can also pass other `ClientOptions` parameters accepted by the official SDK.

If you are hosting on Azure OpenAI, see the [dedicated page instead](/v0.2/docs/integrations/llms/azure).

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