What is Next.js? Why Every AI Tool Generates It
Understand why Next.js dominates AI-generated code and how its file-based routing and App Router work.
If you've used any AI coding tool — Cursor, Bolt, v0, Lovable, or even just asked Claude or ChatGPT to build you a web app — you've probably noticed something. The code it generates almost always starts with the same thing: Next.js.
This isn't a coincidence. There's a reason every AI tool reaches for Next.js first, and understanding that reason will make you a better builder.
What Is Next.js?
Next.js is a framework for building websites and web applications. A framework is like a partially built house — the foundation, walls, and plumbing are already done. You just need to decide what goes in each room.
Without a framework, building a website from scratch means figuring out how to handle dozens of complex problems yourself: routing (how different URLs show different pages), loa
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