Getting Started with Cursor AI: Complete 2026 Setup Guide

Cursor has become the default IDE for thousands of developers who want to write code 5–10× faster. This guide walks you through everything from installation to your first multi-file edit.

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What is Cursor?

Cursor is a fork of VS Code with deep AI integration built in from day one. Unlike GitHub Copilot (which is a plugin), Cursor's AI features are native — they understand your entire codebase, not just the open file.

Key advantages over VS Code + Copilot:

• Codebase-aware context (not just the current file)
• Multi-file edits with one command
• Built-in support for Claude 3.7, GPT-5, and DeepSeek V4
• Privacy Mode for enterprise teams

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Step 1: Installation

1. Go to cursor.com and download the installer for your platform (Mac, Windows, or Linux)
2. Run the installer — Cursor will automatically import your VS Code settings, extensions, and keybindings
3. Sign in with your GitHub account or create a new Cursor account

Tip: If you have custom VS Code settings, select "Import VS Code Settings" during onboarding. All your extensions transfer over automatically.

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Step 2: Configure Your Model

Open Settings → Cursor Settings → Models:

• Claude 3.7 Sonnet — Best for complex refactoring and architectural decisions
• GPT-5 — Strong all-rounder, especially for JavaScript/TypeScript
• DeepSeek V4 — Best value: 95% of Claude quality at 20% of the token cost
• Cursor-fast — Ultra-low latency for simple completions

For most developers, Claude 3.7 or DeepSeek V4 is the best default.

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Step 3: Your First Codebase Index

Cursor builds a semantic index of your project so it can answer questions about your entire codebase, not just the open file.

1. Open a project folder (File → Open Folder)
2. Cursor will prompt you to index the codebase — click "Index Codebase"
3. Wait 1–2 minutes while it processes your files
4. Once indexed, you can ask questions like: "Where is the authentication logic?" and Cursor will find it instantly

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Step 4: The Three Core Features

1. Tab Autocomplete

As you type, Cursor predicts your next line — and sometimes your next 5–10 lines. Just press Tab to accept.

Pro tip: The more context you provide in comments, the better the predictions:

// Validate email format and check if it already exists in the database
// Return { valid: boolean, exists: boolean, message: string }
async function validateEmail(email: string) {
  // Cursor will now generate the entire function body
}

2. Composer (Cmd+I / Ctrl+I)

Composer is Cursor's multi-file editing engine. Use it for tasks that span multiple files:

• "Add a loading state to the UserProfile component and update the API call to handle errors"
• "Rename all instances of userData to userProfile across the entire project"
• "Add TypeScript strict mode and fix all resulting type errors"

Composer shows you a diff for every file it changes. You can accept or reject each change individually.

3. Chat (Cmd+L / Ctrl+L)

Chat is the conversational interface. Use it when you need an explanation or want to explore options:

• "Why is this useEffect running twice?"
• "What's the most efficient way to handle 10,000 concurrent WebSocket connections?"
• "Explain what this regex does: /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)/"

Tag files with @filename to add them to the context window.

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Step 5: Set Up .cursorrules

The .cursorrules file lets you define persistent instructions that apply to every AI interaction in your project:

# .cursorrules
- Always use TypeScript strict mode
- Prefer functional components over class components in React
- Use Prisma for all database operations
- Follow the existing error handling pattern (throw AppError with status codes)
- Never use 'any' type — use 'unknown' and narrow it
- Write tests for every public function using Vitest

Place this file in the root of your project. Cursor reads it before every AI request.

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Step 6: Privacy Mode (Optional)

If you're working with proprietary code, enable Privacy Mode:

Settings → Privacy → Enable Privacy Mode

In Privacy Mode, no code is sent to Anthropic or OpenAI's servers for training. Your code only passes through Cursor's API routing layer.

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Pricing

Plan	Price	Best For
Free	$0/mo	Hobbyists (2,000 completions/mo)
Pro	$20/mo	Professional developers
Business	$40/user/mo	Teams needing SOC2 & SSO

Pro tip: If you burn through the 500 monthly fast requests, you can add your own API keys (Anthropic, OpenAI) for unlimited usage at cost price.

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Quick Reference: Key Shortcuts

Action	Mac	Windows
Open Composer	Cmd+I	Ctrl+I
Open Chat	Cmd+L	Ctrl+L
Accept suggestion	Tab	Tab
Reject suggestion	Escape	Escape
Toggle AI sidebar	Cmd+B	Ctrl+B

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Next Steps

• Explore the Cursor documentation for advanced features
• Set up .cursorrules for your specific tech stack
• Try the Cursor subreddit for power-user tips
• Read our Cursor vs Windsurf comparison to see how it stacks up