Cursor vs Copilot vs Claude Code: Which AI Coding Tool Is Right for You?

The AI coding tool landscape has exploded. Cursor, GitHub Copilot, and Claude Code are the three most widely used tools, each with different strengths. Here is a practical comparison based on real-world usage.

Cursor

Cursor is a fork of VS Code with deep AI integration. It offers two modes: Composer (inline code generation) and Agent (autonomous multi-file editing). Cursor excels at understanding your entire codebase because it indexes your project files and uses them as context.

Session data is stored in a SQLite database at ~/Library/Application Support/Cursor/User/globalStorage/state.vscdb. Each conversation is stored as composerData and individual messages as bubbleId entries. Qmmit reads this database to extract your prompts.

Strengths: Best codebase awareness, excellent multi-file editing, fast inline completions. Weaknesses: Can be resource-heavy, Agent mode sometimes makes unnecessary changes.

GitHub Copilot

Copilot integrates into VS Code, JetBrains, and other editors. Copilot Chat provides conversational AI assistance, while inline suggestions offer real-time completions. Copilot is the most widely adopted tool due to its GitHub integration.

Chat sessions are stored as JSONL files in VS Code workspaceStorage/chatSessions/. Each file contains the full conversation with timestamps. Qmmit reads these files and filters by workspace path to match prompts to the correct project.

Strengths: Seamless GitHub integration, works in many editors, good inline completions. Weaknesses: Less context awareness than Cursor, chat responses can be generic.

Claude Code

Claude Code is a terminal-based AI assistant from Anthropic. You run it in your project directory and have a conversation about your code. It can read files, write code, and run commands. Claude Code is popular for its strong reasoning ability.

Sessions are stored as JSONL files at ~/.claude/projects/<encoded-path>/<session-id>.jsonl. Each line is a JSON object with role, content, and timestamp. Qmmit reads these files and extracts user prompts with their timestamps.

Strengths: Best reasoning and explanation, terminal-native workflow, excellent for complex refactoring. Weaknesses: No inline completions, requires terminal context switching.

Which Should You Use?

Use Cursor if you want the best all-in-one IDE experience with deep codebase awareness. Use Copilot if you want broad editor support and GitHub integration. Use Claude Code if you prefer terminal workflows and need strong reasoning for complex tasks.

Many developers use multiple tools. Qmmit tracks all of them simultaneously — your portfolio shows which tools you used for each project with percentage breakdowns.