💬 Building a Chatbot with Memory in Node.js

We’ve built text generation, a CLI tool, and image generation.
In this, we’ll create a chatbot that remembers your conversation — similar to ChatGPT.

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🎯 What We’re Building

A chatbot that:

• Stores conversation history in memory

• Sends the full chat log to the AI each time

• Feels more natural and context-aware

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🛠 Setup

Install dependencies:

npm install openai dotenv inquirer chalk

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💻 Code – chatbot.js

const { Configuration, OpenAIApi } = require("openai");
const inquirer = require("inquirer");
const chalk = require("chalk");
require("dotenv").config();

const configuration = new Configuration({
  apiKey: process.env.OPENAI_API_KEY,
});
const openai = new OpenAIApi(configuration);

let conversationHistory = [
  { role: "system", content: "You are a helpful AI assistant." }
];

async function chat() {
  while (true) {
    const { prompt } = await inquirer.prompt([
      { type: "input", name: "prompt", message: chalk.cyan("You:") }
    ]);

    if (prompt.toLowerCase() === "exit") {
      console.log(chalk.yellow("👋 Goodbye!"));
      break;
    }

    conversationHistory.push({ role: "user", content: prompt });

    try {
      const res = await openai.createChatCompletion({
        model: "gpt-3.5-turbo",
        messages: conversationHistory
      });

      const aiReply = res.data.choices[0].message.content.trim();
      console.log(chalk.green("\nAI:"), aiReply);

      conversationHistory.push({ role: "assistant", content: aiReply });
    } catch (err) {
      console.error(chalk.red("❌ Error:"), err.message);
    }
  }
}

chat();

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🧪 How to Run

node chatbot.js

Type messages and enjoy a natural AI conversation.
Type exit to quit.

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🔍 What You Learned Today

✅ How to persist conversation context in memory
✅ How to build a chat loop in Node.js
✅ How to make AI output feel more like ChatGPT