GPT-5.2 Medical Quiz App Integration Guide

What We’re Building

In this tutorial, we will build a medical quiz application using Next.js and the GPT-5.2 API from OpenAI. This application will dynamically generate medical quiz questions and provide real-time feedback to users based on their responses. The application will leverage the latest capabilities of GPT-5.2 to formulate questions and analyze user answers, providing an engaging and educational experience.

The final application will allow users to test their medical knowledge with a variety of questions pulled from a large dataset of medical information. Each interaction with the quiz will involve real-time API calls to generate new questions and validate answers, ensuring a unique experience every time.

Setup and Installation

To get started, we need to set up a new Next.js project and install the necessary dependencies. We will also configure environment variables to securely manage our API key.

npx create-next-app@latest medical-quiz-app --ts
cd medical-quiz-app
npm install openai

Next, we need to set up environment variables to store our OpenAI API key securely. Create a new file named .env.local in the root directory of your project and add your API key like so:

OPENAI_API_KEY=your_openai_api_key_here

Step 1: Setting Up the API Route

In this step, we’ll set up an API route in our Next.js application to handle requests to the GPT-5.2 API. This will be used to fetch quiz questions and validate answers.

import { OpenAI } from 'openai';

const client = new OpenAI(process.env.OPENAI_API_KEY);

export async function POST(request: Request) {
  try {
    const { question } = await request.json();
    const response = await client.chat.completions.create({
      model: "gpt-5.2",
      messages: [{ role: "system", content: "You are a medical quiz generator." }, { role: "user", content: question }],
    });

    return new Response(JSON.stringify({ answer: response.choices[0].message.content }), {
      headers: { 'Content-Type': 'application/json' },
    });
  } catch (error) {
    return new Response(JSON.stringify({ error: 'Failed to fetch data from OpenAI' }), {
      status: 500,
      headers: { 'Content-Type': 'application/json' },
    });
  }
}