Cursor

Cursor is an AI-first code editor built as a fork of VS Code — it looks and works like VS Code (same extensions, themes, keybindings) but rebuilds the editing experience around AI. Instead of bolting AI onto an existing editor through plugins, Cursor weaves AI into every interaction: autocomplete that predicts your next action across multiple lines, a composer that edits multiple files from natural language instructions, and autonomous agents that handle complex tasks while you focus on design decisions.

Built by Anysphere, Cursor has become the most widely adopted AI code editor, with over 80% developer awareness and 33% active usage as of 2025 surveys. It's the primary alternative to Claude Code for developers who prefer a visual editor over a terminal-first workflow.

Why Developers Use Cursor

• AI-native editing — autocomplete, chat, and multi-file editing all powered by AI with full codebase context, not just the current file
• Zero switching cost from VS Code — imports your settings, extensions, themes, and keybindings automatically
• Multi-model support — use Claude, GPT, Gemini, or other models depending on the task
• Codebase indexing — automatically indexes your project's functions, types, patterns, and dependencies for context-aware suggestions
• Agent mode — autonomous multi-file editing with terminal access, package installation, and iterative error fixing
• Background agents — long-running tasks that work asynchronously while you continue coding

Core Features

Tab Completion

Cursor's Tab model goes beyond single-line autocomplete. It predicts your next action — whether that's completing a function, adding an import, fixing a type, or restructuring a block — based on the context of your entire codebase, not just the current file. The predictions feel uncanny because the model has indexed your project's patterns and understands what you're likely to do next.

Tab completion is where most developers feel the immediate productivity boost: 30-40% faster coding from intelligent, multi-line predictions that understand your project's conventions.

Chat

The chat panel answers questions about your codebase with full context. Unlike generic AI chat, Cursor's chat knows your project structure, file relationships, and code patterns because it indexes everything locally. You can:

• Ask questions about how a feature works
• Request explanations of complex functions
• Get suggestions for refactoring approaches
• Reference specific files or symbols with @ mentions

Chat responses reference your actual code, not generic examples from training data.

Composer (Agent Mode)

Composer is Cursor's multi-file editing interface. Describe what you want in natural language, and Composer:

1. Plans the changes across your codebase
2. Creates, edits, and deletes files as needed
3. Runs terminal commands (install packages, run tests)
4. Reads error output and iterates on fixes
5. Presents a diff for your review before applying

In Agent mode, Composer operates autonomously — it can run up to 8 parallel agents working on different parts of a task simultaneously. For example, one agent might refactor the API layer while another updates the corresponding tests and a third adjusts the frontend components.

Background Agents

Background agents handle long-running tasks asynchronously. You can assign a task — like a complex refactor, test suite expansion, or dependency migration — and continue working on other code while the agent works. Background agents:

• Monitor their own progress and wait for long shell commands to complete
• Use browser automation for tasks that require visual verification
• Self-correct when they encounter errors
• Report results when finished

This is useful for tasks that take many iterations: the agent works in the background and surfaces results when ready, rather than blocking your workflow.

MCP Support

Cursor supports the Model Context Protocol (MCP) — the same standard used by Claude Code. This means you can connect external tools and services to Cursor:

• Database clients for querying data directly from the editor
• Browser automation tools for testing web applications
• API integrations for third-party services
• Custom tools built as MCP servers

Configure MCP servers in Cursor's settings to extend its capabilities beyond code editing.

Codebase Indexing

When you open a project in Cursor, it indexes your entire codebase — functions, types, imports, patterns, dependencies, and file relationships. This index powers every AI feature:

• Tab completion knows your naming conventions
• Chat can answer questions about any file in the project
• Composer understands cross-file dependencies when making changes
• Agents navigate the codebase intelligently when working on tasks

The index updates automatically as you edit. This is Cursor's primary advantage over plugin-based AI: the AI always has full project context.

Pricing

The Pro plan is the sweet spot for solo developers and small teams. At $20/month, you get the full AI experience including Agent mode and multi-model support.

Models

Cursor supports multiple AI models, giving you flexibility based on the task:

Switch models per-request in the chat or composer to use the best model for each task.

Cursor vs VS Code with Copilot

Copilot is cheaper and great for inline autocomplete. Cursor is more capable for autonomous, multi-file tasks and provides deeper codebase context.

Cursor vs Claude Code

Many developers use both: Cursor for visual editing and autocomplete during active development, Claude Code for complex refactoring, automation, and CI/CD integration.

Getting Started

1. Download Cursor

Download from cursor.com for macOS, Windows, or Linux.

2. Import VS Code Settings

On first launch, Cursor offers to import your VS Code configuration — extensions, themes, keybindings, and settings. Accept this to start with your familiar environment.

3. Index Your Project

Open your project folder. Cursor automatically indexes the codebase. For large projects, the initial index takes a few minutes.

4. Start Using AI

• Tab — accept AI autocomplete suggestions as you type
• Cmd/Ctrl + K — open inline edit for quick changes
• Cmd/Ctrl + L — open chat to ask questions about your code
• Cmd/Ctrl + I — open Composer for multi-file editing

5. Try Agent Mode

In Composer, switch to Agent mode for autonomous multi-file tasks. Describe what you want ("add authentication to this app" or "write tests for the payment module") and let the agent work.

When to Use Cursor

Cursor is the best choice when you want AI deeply integrated into a visual editor. For terminal-first workflows and automation, Claude Code complements it well.