How to Migrate from GitHub Copilot to Claude Code

You have been using Copilot for autocomplete and chat. Now you want to try Claude Code. Here is exactly what changes and how to get productive in your first session.

What is Different

Copilot is an IDE plugin. It lives inside VS Code or JetBrains and provides inline completions and a chat panel.

Claude Code is a terminal application. You run it alongside your editor, not inside it. It reads your entire project, makes multi-file changes, runs your tests, and commits to git. The model operates on your actual filesystem, not just the open file.

Step 1: Install

npm install -g @anthropic-ai/claude-code

You need an Anthropic subscription (Pro $20/mo or Max $200/mo). There is no free tier.

Step 2: Run Your First Session

Navigate to any project and type claude:

cd ~/Developer/my-project
claude

Claude Code scans your project structure. It reads your package.json, tsconfig.json, file tree, and git history. You are now in an interactive session.

Step 3: Replace Copilot Workflows

Copilot autocomplete becomes natural language prompts:

# Instead of waiting for Copilot to suggest a function:
"Write a function that validates email addresses using Zod"

# Instead of Copilot inline chat:
"Fix the type error on line 47 of auth.ts without using type assertions"

Copilot chat panel becomes Claude Code conversation:

# Instead of asking Copilot Chat to explain code:
"Explain how the auth middleware works in this project"

# Instead of asking for a refactor:
"Refactor lib/database.ts from callbacks to async/await. Keep all tests passing."

The key difference: Claude Code executes the changes. Copilot suggests them. You do not need to manually apply diffs.

Step 4: Set Up CLAUDE.md

This is what Copilot does not have. CLAUDE.md is persistent memory that survives across sessions.

claude /init

This generates a CLAUDE.md based on your project. Or create one manually:

# CLAUDE.md

## Stack
- Next.js 16 + TypeScript
- Tailwind CSS
- Prisma + PostgreSQL

## Rules
- Always use server components by default
- Run `pnpm typecheck` after changes
- Use Zod for all validation
- Commit after each meaningful change

Every session reads this file. Your coding standards are enforced automatically.

Step 5: Keep Copilot for Inline Completions

You do not have to choose one. Many developers use both:

• Copilot for fast inline completions while typing (tab to accept)
• Claude Code for multi-file changes, refactoring, debugging, and autonomous work

They complement each other. Copilot is faster for single-line completions. Claude Code is better for everything that requires understanding your full project.

Common Migration Friction Points

"Where is the autocomplete?" Claude Code does not do inline completions. Keep Copilot or use Cursor for that. Claude Code handles larger tasks.

"It changed files I did not expect." Claude Code operates on your full project. Use git to review changes before committing. Run git diff after each task.

"How do I undo?" Every change is on disk. Use git checkout -- . to undo everything, or git stash to save and review.

"It is slower than Copilot." Claude Code is solving harder problems. A multi-file refactor takes longer than an autocomplete suggestion. The time saved is in the total workflow, not per-keystroke.

The Productivity Shift

With Copilot, you write code line by line and accept suggestions. Your productivity scales with your typing speed.

With Claude Code, you describe outcomes and review results. Your productivity scales with the clarity of your instructions.

The migration is not "learn a new tool." It is "shift from writing code to directing code."

Frequently Asked Questions

Do I need to cancel Copilot to use Claude Code?

No. They run independently. Copilot is an IDE plugin. Claude Code is a terminal app. Many developers use both simultaneously.

Is Claude Code worth $200/month if I already have Copilot?

The Max plan makes sense if you do multi-file work daily - refactoring, feature building, debugging across files. If you mostly write single files, Copilot at $10/month is sufficient.

Can Claude Code access my Copilot settings?

No. They are separate systems. Your Copilot configuration stays in your IDE. Claude Code uses CLAUDE.md for project configuration.

Does Claude Code work in VS Code?

Yes. Claude Code has a VS Code extension that provides a terminal panel inside the editor. You get the full Claude Code experience without switching to a separate terminal.

What about Copilot Workspace?

Copilot Workspace (multi-file editing) competes more directly with Claude Code. If GitHub ships it broadly, the comparison changes. Today, Claude Code is more capable for autonomous multi-file work.