GitHub Copilot Cheat Sheet

Reviewed by Marouen Arfaoui · Last tested April 2026 · 157 tools tested

Last updated: April 2026

Quick Facts

Pricing

Freemium. Free for verified students, teachers, and popular OSS maintainers. Paid plan is $10/month or $100/year for individuals.

Free Plan

Yes. Full-featured 30-day trial, then free for verified students, teachers, and maintainers of popular open-source projects.

Rating

4.5/5

Best For

Professional developers and students who want deeply integrated, line-by-line code completion directly in their IDE to accelerate daily coding.

Key Features

✓
Inline Code Suggestions
I tested this daily. It predicts and completes your current line or block as you type, often reading your mind. It's the core of the experience.
✓
Comment-to-Code Generation
Write a comment like '// parse JSON and extract user email' and Copilot will generate the code block. It's surprisingly accurate for common patterns.
✓
Multi-Language Support
In my experience, it's excellent for Python, JavaScript, TypeScript, and Go. It's competent in dozens more, from Rust to SQL, making it a versatile tool.
✓
Whole Function Generation
Start typing a function signature, and it will often suggest the entire implementation. This is a massive time-saver for boilerplate and algorithms.
✓
Context-Aware Completions
It analyzes your open files and project structure. What surprised me was how it suggests imports, error handling, and tests relevant to your specific codebase.
✓
CLI Command Suggestions
Works in terminal windows within your IDE. It suggests full shell commands, flags, and even Docker or git commands based on what you're trying to do.
✓
Fill-in-the-Middle (FIM)
You can leave a gap in your code, and Copilot will fill it based on context before and after. Incredibly useful for refactoring or adding logic.
✓
Test Generation
I use this constantly. Write a function, then a comment like '# test for edge cases', and it will generate sensible unit test stubs, often with pytest or Jest.
✓
Framework-Specific Code
It understands React, Next.js, Django, etc. It will suggest hooks, components, and framework-specific syntax, helping you stay in the flow.
✓
Code Explanation
Highlight a complex block, use the '/explain' slash command, and it generates a plain-English summary. Great for onboarding or deciphering legacy code.
✓
Documentation Generation
It can write docstrings and JSDoc comments for your functions. The quality is good for standard parameters but can miss nuanced details.
✓
IDE Integration
It's not a separate chat window; it's woven into VS Code, JetBrains, etc. This seamless integration is, in my opinion, its killer advantage over competitors.

Tips & Tricks

TIP

Be specific in your comments. 'Calculate total with tax' is okay; 'Calculate total with 8.5% sales tax, rounding up' is better.

TIP

When a suggestion is close but not right, just keep typing your correction. Copilot learns from your immediate edits.

TIP

Use the 'Alt+\' shortcut (configurable) to cycle through multiple suggestions if the first one isn't perfect.

TIP

For repetitive boilerplate, write one example and let Copilot generate the next three nearly identical blocks.

TIP

In terminal tabs, describe the command you need (e.g., 'find all .log files older than 7 days') and let it suggest the full `find` command.

Common Commands

Alt + ] / Alt + [

Cycle forward/backward through multiple inline code suggestions when more than one is available.

Ctrl + Enter (In Chat)

Open the Copilot Chat panel to ask questions about your codebase, get explanations, or generate code from a prompt.

/fix

In Chat, use this slash command to ask Copilot to analyze and suggest fixes for errors in your current code.

/explain

In Chat, use this on selected code to get a detailed, plain-language explanation of what it does.

/tests

In Chat, prompt Copilot to generate unit tests for the selected function or code block.

Limitations

-It can confidently generate incorrect or outdated API code, especially for newer libraries.
-It sometimes suggests overly complex or verbose solutions when a simpler one exists.
-It lacks deep project-wide context, so suggestions can be myopic and ignore broader architectural patterns.
-You can become over-reliant, potentially atrophying your own memory for syntax and library details.

Alternatives

CursorTabnineCodeium

→

GitHub Copilot TutorialFull step-by-step guide

→

Frequently Asked Questions

Does GitHub Copilot train on my private code?+

According to GitHub, they do not use your private code, personal data, or code from GitHub Teams/Enterprise Cloud to train the underlying models. Your code snippets are used to provide suggestions in real-time but are not retained for long-term model training. Check their privacy docs for the latest.

How does it compare to using ChatGPT for coding?+

Copilot is for in-the-flow coding, offering completions as you type. ChatGPT is for conversation, planning, and solving discrete problems outside the IDE. In my experience, Copilot is faster for daily work, but I use ChatGPT for architectural advice. They are complementary.

Can it work with my company's proprietary internal frameworks?+

Its effectiveness is limited. It won't know your internal APIs unless they are similar to public ones. For this, Enterprise plans offer fine-tuning on your codebase, which significantly improves relevance for proprietary stacks.

Is the 30-day trial a full-featured trial?+

Yes, the trial gives you complete access to the Pro/Individual tier features. I tested it thoroughly during this period. There's no feature lock, so you can evaluate everything before deciding to pay.

What's the biggest mistake beginners make with Copilot?+

Accepting every suggestion without thinking. You must remain the senior developer in the pair. Always review, understand, and test the code it generates. It's an assistant, not an autopilot. Blind acceptance leads to buggy, insecure code.

Was this helpful?