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How to Use OpenAI’s ChatGPT API in Node.js

How to Use OpenAI’s ChatGPT API in Node.js: OpenAI’s ChatGPT API allows developers to integrate the power of GPT-3.5 into their own applications, enabling interactive and dynamic conversations with AI. In this article, we will explore how to utilize the ChatGPT API in Node.js, a popular JavaScript runtime environment. By following the steps outlined below, you’ll be able to leverage the capabilities of ChatGPT to build intelligent chatbots, virtual assistants, and more.

Prerequisites: To get started, ensure you have the following prerequisites:

Node.js installed on your machine.
A registered OpenAI account with API access enabled.
An OpenAI API key. You can obtain one by following the OpenAI API documentation.

Step 1: Set Up the Node.js Project

Create a new directory for your project and navigate to it using the terminal or command prompt.
Initialize a new Node.js project by running the following command:

csharp

npm init -y
Install the axios package, which will be used to make HTTP requests to the ChatGPT API:

npm install axios

Step 2: Make API Requests

1. Create a new JavaScript file, such as chatbot.js, in your project directory.

2. Import the axios package at the beginning of the file:

javascript

const axios = require('axios');

3. Set up the base API URL and your API key as constants:

javascript

const apiUrl = 'https://api.openai.com/v1/chat/completions';

const apiKey = 'YOUR_API_KEY';

4. Define a function that makes a POST request to the ChatGPT API:

javascript

async function chatGPTRequest(prompt) {

  try {

    const response = await axios.post(apiUrl, {

      prompt: prompt,

      max_tokens: 100,

      temperature: 0.6,

      n: 1,

      stop: '\n',

    }, {

      headers: {

        'Authorization': `Bearer ${apiKey}`,

        'Content-Type': 'application/json',

      },

    });

return response.data.choices[0].text.trim(); } catch (error) { console.error('Error:', error); throw error; } }

Step 3: Interact with the ChatGPT API

5. Invoke the chatGPTRequest function with a prompt to receive a response from the ChatGPT model:

javascript

async function main() {

  const prompt = 'Hello, ChatGPT!';

  const response = await chatGPTRequest(prompt);

  console.log('Response:', response);

}

main();

Feel free to customize the prompt based on your application’s requirements.

Step 4: Run the Node.js Application

6. Save the chatbot.js file and run the Node.js application using the following command:

node chatbot.js