ChatGPT vs DeepSeek vs Mistral: Next.js

Prompt

next.js 15 tutorial

ChatGPTOpenAI

next.js 15 tutorial

As of June 2024, Next.js 15 has not been officially released. The latest stable version is Next.js 13, which introduced major features like the new App Router, Server Components, and enhanced data fetching methods.

If you are looking for a tutorial on Next.js, I can guide you through creating a simple Next.js app using the latest stable features from Next.js 13, which will prepare you for future updates including version 15.

Next.js Tutorial (Based on Latest Stable Version)

Step 1: Setup a New Next.js Project

Make sure you have Node.js installed.

Run the following command to create a new Next.js project:

npx create-next-app@latest my-nextjs-app
cd my-nextjs-app
npm run dev

Open http://localhost:3000 in your browser to see your app running.

Step 2: Understand the Project Structure

pages/ or app/ (depending on routing mode) — contains the pages of your app.

public/ — folder for static assets like images.

styles/ — global and modular CSS styles.

next.config.js — configuration file.

Step 3: Add a New Page

If using the pages directory (traditional routing), create a file:

pages/about.js

export default function About() {
  return <h1>About Page</h1>;
}

Navigating to /about will render this component.

If using the app/ directory (new in Next.js 13+), create:

app/about/page.jsx

export default function AboutPage() {
  return <h1>About Page</h1>;
}

Step 4: Add Navigation

Create a simple navigation menu.

In app/layout.jsx or pages/_app.js, add:

import Link from 'next/link';export default function Layout({ children }) {
  return (
    <>
      <nav>
        <Link href="/">Home</Link> | <Link href="/about">About</Link>
      </nav>
      <main>{children}</main>
    </>
  );
}

Step 5: Fetch Data (Server Side)

Example using getServerSideProps in pages directory:

export async function getServerSideProps() {
  const res = await fetch('https://jsonplaceholder.typicode.com/posts');
  const posts = await res.json();
  return { props: { posts } };
}export default function Posts({ posts }) {
  return (
    <ul>
      {posts.map(post => (
        <li key={post.id}>{post.title}</li>
      ))}
    </ul>
  );
}

In the app directory, you can fetch data directly in the server component:

app/posts/page.jsx

async function getPosts() {
  const res = await fetch('https://jsonplaceholder.typicode.com/posts');
  return res.json();
}export default async function PostsPage() {
  const posts = await getPosts();
  return (
    <ul>
      {posts.map(post => (
        <li key={post.id}>{post.title}</li>
      ))}
    </ul>
  );
}

Recommended Resources

Official Next.js Documentation

Next.js GitHub Repository

Tutorials on YouTube or platforms like freeCodeCamp, Udemy, etc.

If you want, I can help you with more advanced tutorials or wait until Next.js 15 is officially released for the latest features. Let me know!

19:43

DeepSeekDeepSeek

next.js 15 tutorial

I'll provide you with a comprehensive Next.js 15 tutorial covering the key features and concepts. Next.js 15 builds upon the great foundation of Next.js 14 with several improvements.

Setup and Installation

Project Structure

App Router

Routing

Data Fetching

Server and Client Components

Styling

API Routes

Deployment

1. Setup and Installation {#setup}

# Create a new Next.js 15 project npx create-next-app@latest my-next-app # Navigate to the project cd my-next-app # Install dependencies (if not done automatically) npm install

# Run development server npm run dev

During setup, you'll be prompted to configure:

TypeScript (recommended)

ESLint

Tailwind CSS

src/ directory

App Router (enabled by default)

Import aliases

2. Project Structure {#structure}

my-next-app/
├── app/                 # App Router directory
│   ├── globals.css
│   ├── layout.tsx
│   ├── page.tsx
│   └── favicon.ico
├── public/             # Static assets
├── next.config.js      # Next.js configuration
├── package.json
└── tsconfig.json

3. App Router Fundamentals {#app-router}

Root Layout

// app/layout.tsx
import type { Metadata } from 'next'
export const metadata: Metadata = {
  title: 'My Next.js 15 App',
  description: 'Built with Next.js 15',
}export default function RootLayout({
  children,
}: {
  children: React.ReactNode
}) {
  return (
    <html lang="en">
      <body>{children}</body>
    </html>
  )
}

Main Page

// app/page.tsx
export default function Home() {
  return (
    <main>
      <h1>Welcome to Next.js 15!</h1>
      <p>This is the home page</p>
    </main>
  )
}

4. Routing {#routing}

Basic Routes

// app/about/page.tsx
export default function About() {
  return <h1>About Page</h1>
}// app/contact/page.tsx
export default function Contact() {
  return <h1>Contact Page</h1>
}

Dynamic Routes

// app/blog/[slug]/page.tsx
interface BlogPostProps {
  params: {
    slug: string
  }
}export default function BlogPost({ params }: BlogPostProps) {
  return (
    <article>
      <h1>Blog Post: {params.slug}</h1>
      <p>Content for {params.slug}</p>
    </article>
  )
}

Nested Layouts

// app/dashboard/layout.tsx
export default function DashboardLayout({
  children,
}: {
  children: React.ReactNode
}) {
  return (
    <div className="dashboard-layout">
      <aside>Dashboard Sidebar</aside>
      <main>{children}</main>
    </div>
  )
}// app/dashboard/page.tsx
export default function Dashboard() {
  return <h1>Dashboard Home</h1>
}

5. Data Fetching {#data-fetching}

Server Components with Async/Await

// app/users/page.tsx
interface User {
  id: number
  name: string
  email: string
}
async function getUsers(): Promise<User[]> {
  const res = await fetch('https://jsonplaceholder.typicode.com/users')
  
  if (!res.ok) {
    throw new Error('Failed to fetch users')
  }
  
  return res.json()
}
export default async function UsersPage() {
  const users = await getUsers()  return (
    <div>
      <h1>Users</h1>
      <ul>
        {users.map((user) => (
          <li key={user.id}>
            {user.name} - {user.email}
          </li>
        ))}
      </ul>
    </div>
  )
}

Loading States

// app/users/loading.tsx
export default function Loading() {
  return <div>Loading users...</div>
}

Error Handling

// app/users/error.tsx
'use client'export default function Error({
  error,
  reset,
}: {
  error: Error & { digest?: string }
  reset: () => void
}) {
  return (
    <div>
      <h2>Something went wrong!</h2>
      <button onClick={() => reset()}>Try again</button>
    </div>
  )
}

6. Server and Client Components {#components}

Server Component (Default)

// app/server-example/page.tsx
export default function ServerExample() {
  const timestamp = new Date().toISOString()
  
  return (
    <div>
      <h1>Server Component</h1>
      <p>Rendered at: {timestamp}</p>
      {/* This timestamp will be the same for all users */}
    </div>
  )
}

Client Component

// app/client-example/page.tsx
'use client'
import { useState, useEffect } from 'react'
export default function ClientExample() {
  const [timestamp, setTimestamp] = useState('')
  const [count, setCount] = useState(0)
  useEffect(() => {
    setTimestamp(new Date().toISOString())
  }, [])  return (
    <div>
      <h1>Client Component</h1>
      <p>Current time: {timestamp}</p>
      <button onClick={() => setCount(count + 1)}>
        Count: {count}
      </button>
    </div>
  )
}

7. Styling {#styling}

Tailwind CSS (Recommended)

// app/styling/page.tsx
export default function StylingPage() {
  return (
    <div className="min-h-screen bg-gray-100 py-8">
      <div className="max-w-4xl mx-auto px-4">
        <h1 className="text-4xl font-bold text-blue-600 mb-6">
          Styling with Tailwind
        </h1>
        <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
          <div className="bg-white p-6 rounded-lg shadow-md">
            <h2 className="text-xl font-semibold mb-3">Card 1</h2>
            <p className="text-gray-600">This is a card with Tailwind styling</p>
          </div>
          <div className="bg-white p-6 rounded-lg shadow-md">
            <h2 className="text-xl font-semibold mb-3">Card 2</h2>
            <p className="text-gray-600">Another beautifully styled card</p>
          </div>
        </div>
      </div>
    </div>
  )
}

CSS Modules

// app/css-modules/page.tsx
import styles from './page.module.css'export default function CSSModulesPage() {
  return (
    <div className={styles.container}>
      <h1 className={styles.title}>CSS Modules</h1>
      <p className={styles.description}>
        Scoped styling with CSS Modules
      </p>
    </div>
  )
}

/* app/css-modules/page.module.css */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}
.title {
  color: #1f2937;
  font-size: 2.25rem;
  font-weight: bold;
  margin-bottom: 1rem;
}.description {
  color: #6b7280;
  font-size: 1.125rem;
}

8. API Routes {#api-routes}

Basic API Route

// app/api/users/route.ts
import { NextResponse } from 'next/server'
export async function GET() {
  const users = [
    { id: 1, name: 'John Doe', email: 'john@example.com' },
    { id: 2, name: 'Jane Smith', email: 'jane@example.com' },
  ]
  return NextResponse.json(users)
}export async function POST(request: Request) {
  const body = await request.json()
  
  // Process the data (in real app, save to database)
  console.log('Received:', body)
  
  return NextResponse.json({ message: 'User created', data: body })
}

Dynamic API Routes

tsx
// app/api/users/[id]/route.ts
interface RouteParams {
  params: {
    id: string
  }
}

export async function GET(request: Request, { params }: RouteParams) { const { id } = params // Fetch user by ID from database const user = { id: parseInt(id), name: 'User ' + id, email:user${id}

19:43

MistralMistral AI

next.js 15 tutorial

As of my last update in October 2023, Next.js 15 has not been released. However, I can provide you with a general tutorial on how to get started with Next.js, which should be applicable to future versions with minor adjustments. Next.js is a popular React framework that enables functionality such as server-side rendering and generating static websites for React-based web applications.

Getting Started with Next.js

Step 1: Setting Up Your Environment

Install Node.js: Ensure you have Node.js installed. You can download it from nodejs.org.

Create a New Next.js Project:

npx create-next-app@latest my-next-app
   cd my-next-app

Start the Development Server:

npm run dev

This will start the development server, and you can view your application at http://localhost:3000.

Step 2: Understanding the Project Structure

pages/: This directory contains your application's pages. Each file in this directory is automatically treated as a route.

public/: This directory is for static files like images, fonts, etc.

styles/: This directory is for your CSS files.

components/: This directory is for your React components.

Step 3: Creating Your First Page

Create a New Page:

Create a new file in the pages directory, for example, about.js.

// pages/about.js
   import React from 'react';
   const About = () => {
     return (
       <div>
         <h1>About Page</h1>
         <p>This is the about page.</p>
       </div>
     );
   };   export default About;

Navigate to the New Page:

You can now navigate to http://localhost:3000/about to see your new page.

Step 4: Adding Components

Create a Component:

Create a new file in the components directory, for example, Header.js.

// components/Header.js
   import React from 'react';
   const Header = () => {
     return (
       <header>
         <h1>My Next.js App</h1>
       </header>
     );
   };   export default Header;

Use the Component:

Import and use the Header component in your pages.

// pages/index.js
   import React from 'react';
   import Header from '../components/Header';
   const Home = () => {
     return (
       <div>
         <Header />
         <h1>Home Page</h1>
         <p>Welcome to the home page.</p>
       </div>
     );
   };   export default Home;

Step 5: Styling Your Application

Global Styles:

You can add global styles in the styles/globals.css file.

/* styles/globals.css */
   body {
     font-family: Arial, sans-serif;
   }

Component-Level Styles:

You can also add styles specific to a component.

// components/Header.js
   import React from 'react';
   import styles from './Header.module.css';
   const Header = () => {
     return (
       <header className={styles.header}>
         <h1>My Next.js App</h1>
       </header>
     );
   };   export default Header;

/* components/Header.module.css */
   .header {
     background-color: #f8f8f8;
     padding: 20px;
     text-align: center;
   }

Step 6: Deploying Your Application

Build the Application:

npm run build

Start the Production Server:

npm start

Deploy to a Hosting Service:

You can deploy your Next.js application to various hosting services like Vercel, Netlify, or AWS.

Conclusion

This tutorial covers the basics of setting up a Next.js project, creating pages and components, styling your application, and deploying it. For more advanced features and updates, refer to the official Next.js documentation.

If Next.js 15 introduces new features or changes, be sure to check the official release notes and documentation for the latest information.

19:43

Analysis

This comparison demonstrates the different approaches each AI model takes when responding to the same prompt. Here are the key differences observed:

Response Characteristics

ChatGPT: Provides a direct response with 49 sentences.

DeepSeek: Provides a direct response with 91 sentences.

Mistral: Provides a direct response with 68 sentences.

Key Takeaways

Each model brings unique strengths to this type of query
Response styles vary significantly between models
Consider your specific use case when choosing between these models

Try This Comparison Yourself

Want to test these models with your own prompts? Visit SNEOS.com to compare AI responses side-by-side in real-time.

This comparison was generated using the SNEOS AI Comparison ToolPublished: October 01, 2025 | Models: ChatGPT, DeepSeek, Mistral