What Is Cursor AI? The AI Code Editor Explained

If you've been following developer discussions lately, you've probably heard Cursor AI come up. It's become one of the most talked-about tools in software development — and for good reason. But what actually is it, and what makes it different from the dozen other AI coding tools out there?

The Short Answer

Cursor is an AI-first code editor built as a fork of VS Code. It looks and feels like VS Code — same keyboard shortcuts, same extension marketplace, same file explorer — but with AI deeply integrated into the editing experience rather than bolted on as an afterthought.

Where GitHub Copilot adds AI suggestions inside VS Code as an extension, Cursor rebuilds the editor around AI from the ground up. The result is an environment where the AI has much more context about your codebase and can do more than just autocomplete a line.

What Can Cursor Actually Do?

Intelligent Autocomplete

Like Copilot, Cursor suggests code as you type. But Cursor's suggestions tend to be more context-aware because it can index your entire codebase, not just the open file.

Chat With Your Codebase

Press Cmd+K (or Ctrl+K) to open a chat panel and ask questions about your code directly. You can ask things like:

• "How does the authentication flow work in this project?"
• "Where is this function being called?"
• "What would break if I changed this parameter?"

The AI uses the context of your open files and indexed codebase to answer accurately.

Inline Editing

Select a block of code, press Cmd+K, and describe what you want changed in plain English. Cursor will rewrite the selection and show you a diff so you can accept or reject the changes.

This is particularly useful for refactoring — you can select a messy function and say "refactor this to be more readable" and get a clean version with a clear before/after comparison.

Multi-File Edits (Composer)

Cursor's Composer feature lets you describe a change that spans multiple files. Rather than editing each file individually, you describe the goal and Cursor proposes changes across the entire codebase in one go.

Debugging Assistance

Paste an error message into the chat and Cursor will explain what it means and suggest a fix in the context of your actual code — not a generic Stack Overflow-style answer, but a fix that fits your specific implementation. See our dedicated guide on how to debug code with Cursor AI.

How Is Cursor Different From GitHub Copilot?

The key difference is depth of integration. Copilot is a plugin that adds AI features to an existing editor. Cursor is an editor that was designed with AI at its core.

Practical differences:

• Cursor can see and reason about your full codebase, not just the current file
• Cursor's chat can take actions (edit files, run terminal commands) — Copilot's chat is more advisory
• Cursor's inline editing with diff view makes it easy to review and accept AI changes
• Copilot has broader IDE support; Cursor is its own editor

For a detailed comparison, see Cursor AI vs GitHub Copilot.

What Models Does Cursor Use?

Cursor is model-agnostic by design. It can use multiple underlying models including GPT-4, Claude, and others. You can choose which model powers your chat and autocomplete. This is one of Cursor's underappreciated advantages — as better models are released, Cursor can adopt them without changing the editor itself.

Is Cursor Free?

Cursor has a free tier that includes a limited number of AI requests per month, plus a paid Pro plan for heavier usage. The free tier is generous enough to evaluate it properly before committing.

Who Is Cursor Best For?

Cursor is most useful for:

• Developers working on existing codebases — the codebase indexing pays off when you can ask questions about code you didn't write
• Refactoring and code review work — the diff-based editing makes reviewing AI changes natural
• Teams that want to move faster without losing control over what the AI produces
• Laravel and PHP developers — see our guide on using Cursor AI for Laravel projects

It's less suited to developers who prefer a minimal editor setup or who are on teams with strict tooling requirements.

Getting Started

Getting started is straightforward:

1. Download Cursor from cursor.sh
2. Import your VS Code settings (Cursor does this automatically on first run)
3. Open your project
4. Press Cmd+K to start chatting with your code

Our Cursor AI tutorial covers the setup and core features in detail.

The Bigger Picture

AI code editors like Cursor are changing how developers work — not by replacing programming, but by removing the slow parts: looking up syntax, writing boilerplate, searching for where something is defined. The actual thinking and design work still requires a developer.

Once your AI-assisted app is built and deployed, it needs the same production care as any other app. Setting up uptime monitoring ensures you'll know immediately if something goes wrong after launch. Domain Monitor makes that straightforward — regardless of which AI tool you used to build it.

Related Articles

• Cursor AI vs Windsurf - Which AI Code Editor Should You Use?
• How to Debug Code With Cursor AI
• How to Use AI Tools to Ship Code Faster