What Is Cursor?

You've probably heard that AI is going to change software development. If you've tried GitHub Copilot or pasted code into ChatGPT, you've seen flashes of what that means. Cursor is the tool that makes the whole workflow feel native — not bolted on. This lesson explains what Cursor actually is, how it differs from the tools you may already know, and why the architecture difference matters more than the marketing.

Built on VS Code — your extensions still work

Cursor is a fork of VS Code. That means every extension you already use — ESLint, Prettier, GitLens, language packs — works exactly as before. Your keybindings, themes, and settings all transfer. You're not switching editors; you're upgrading the one you already have. The codebase is VS Code with AI wired in at the architecture level, not as a plugin.

How Cursor differs from GitHub Copilot

GitHub Copilot is a plugin that sits inside VS Code. It autocompletes lines and sometimes blocks of code. That's useful, but it's limited — Copilot doesn't understand your whole codebase, and you can't have a conversation with it about a file that's three folders away. Cursor is different in three ways.

• Codebase-aware Chat — Cursor indexes your entire project so you can ask questions about any file without opening it first. "Why does the auth middleware redirect to /login?" — Cursor finds the answer.
• Composer for multi-file edits — Copilot autocompletes one file at a time. Cursor's Composer can make changes across several files simultaneously — describe the feature, review the diff, accept or reject.
• Tab that beats Copilot — Cursor's Tab autocomplete predicts multi-line edits including deletions and reformats, not just line completions. It often completes the next logical action, not just the next characters.

What "AI-native" actually means

Tools like ChatGPT or Copilot treat AI as a feature. Cursor treats it as the primary interface. Every interaction — autocomplete, asking questions, making changes — goes through a model with context about your project. The distinction is subtle until you've used it for a week, at which point going back to vanilla VS Code feels like working with one hand tied behind your back.

What Cursor is not

Cursor doesn't write code for you. It accelerates your code. The distinction matters because people who treat AI tools as code generators end up with unmaintainable projects full of patterns they don't understand and can't debug. Cursor is most powerful in the hands of someone who understands what they're building. This course will teach you to be that person.

Summary