Hybrid Approach (Recommended)
Use Copilot for:
- Quick autocomplete while typing
- Boilerplate code generation
- Simple function completions
- Straightforward multi-file tasks within your IDE (agent mode)
- Quick chat questions about visible code
Use Claude Code for:
- Feature implementation spanning multiple repos or cutting across architectures
- Systematic debugging requiring deep codebase traversal
- CI/CD automation and headless execution
- Code reviews and refactoring at scale
- Understanding unfamiliar codebases
- Writing tests for entire modules
Workflow example:
bash
# Morning: Plan feature with Claude Code
claude
You: "I need to add user authentication. What's the best approach for this codebase?"
# Claude analyzes project, suggests architecture
# During coding: Use Copilot for inline completions
# Type in VS Code, Copilot autocompletes
# Afternoon: Debug with Claude Code
claude
You: "Login fails on mobile but works on desktop. Debug this."
# Claude systematically investigates
# End of day: Review with Claude Code
claude
You: "Review my changes today. Check for security issues."
# Claude reviews all modified files