I Built 5 Side Projects in 2026 Using Only Next.js + AI — Here’s What Actually Worked

Real lessons from launching 5 AI-powered side projects in 2026 using Next.js 16, React 19, and modern tools. Spoiler: Not everything went as planned.

Last January I decided to go all-in on AI-assisted development. Five projects later, here’s what made money, what flopped, and the exact stack that won.

The 5 Projects (Quick Overview)

• AI Resume Builder → 8k users in first month
• Niche Twitter Analytics Tool → Failed fast
• Personalized Learning Dashboard → Still growing
• Local-first AI Notion Clone
• Indie Hacker Revenue Tracker

What Surprisingly Worked Extremely Well

Next.js 16 + React 19 Compiler changed everything. I could ship features 3x faster. You can read my full setup in the Next.js 16.2 Full-Stack Guide or check how to handle secure identity in my guide to Authentication in Next.js.

// Example: Optimistic AI Response UI
'use client';
import { useActionState } from 'react';

export function AIChat() {
  const [state, formAction, isPending] = useActionState(async (prev, formData) => {
    const response = await generateAIResponse(formData.get('prompt'));
    return { response, error: null };
  }, { response: '', error: null });

  return (
    <form action={formAction}>
      {/* Beautiful streaming UI with React 19 patterns */}
    </form>
  );
}

The Biggest Surprise: Using v0 + Cursor AI + Windsurf for 70% of the code. I went from idea to MVP in days instead of weeks by building with Next.js AI Examples.

Key Takeaway: Build in public. Share your failures. The community rewards honesty.