Claude Code vs Cursor vs GitHub Copilot — I Used All 3 for a Week (Honest Comparison)

I just spent a week using Claude Code, Cursor, and GitHub Copilot side-by-side on the same project — a REST API with auth, database, and tests. No sponsorships. No affiliate links. Just my honest experience. The Setup Project: Python FastAPI app with PostgreSQL, JWT auth, 15 endpoints, full test suite. Rules: Each tool gets the same tasks. I measure: Time to complete Code quality (bugs found later) Context understanding How much I had to correct Round 1: Project Scaffolding Task: Create project structure with FastAPI, SQLAlchemy, Alembic, pytest. Tool Time Manual fixes needed Claude Code 4 min 0 Cursor 6 min 1 (wrong Alembic config) Copilot 12 min 3 (outdated patterns) Claude Code generated the entire project in one shot — correct pyproject.toml, proper async setup, working Alembic config. It understood the relationships between files. Cursor was close but used sync SQLAlchemy in one file and async in another. Copilot suggested patterns from 2023 docs. Still works, but not what you'd w