GitHub Copilot
GitHub Copilot (sometimes searched as "GitHub Copilots") is the original AI coding assistant, now used by millions of developers. It suggests code in real-time as you type, explains code, fixes bugs, and generates tests — integrated into VS Code, JetBrains, and most major IDEs.
How to Get the Most Out of GitHub Copilot
Write Tests Automatically for Existing Functions
Open any function in your codebase, open Copilot Chat (Ctrl+I), and type "Write comprehensive unit tests for this function, including edge cases and error conditions." Copilot generates a full test suite using your project's existing testing framework (Jest, pytest, RSpec, etc.) — it detects the framework from your package files. This turns test-writing from a chore into a one-minute task.
Use Copilot Chat to Explain Legacy Code
Select any confusing block of code, right-click and choose "Copilot: Explain This." It explains what the code does, why each part exists, and flags potential issues — in plain English. For onboarding to a new codebase or working with inherited code, this replaces hours of manual tracing and comment-reading with a 10-second explanation.
Autocomplete Boilerplate Patterns Across Your Entire Project
As you type, Copilot learns the patterns in your specific codebase — your naming conventions, your error handling style, your API call structure. Write a comment describing what you need and Copilot fills in the implementation based on how you've handled similar cases before. This project-aware completion improves significantly over the first week of use.
Our Take
GitHub Copilot is the best choice for developers who want AI assistance without changing their IDE or workflow — it works inside VS Code, JetBrains, and Vim with minimal setup. Its deep GitHub integration (PR summaries, issue to code) is also unique. For a more immersive AI-first coding experience with codebase chat and a richer interface, Cursor is worth the switch. Tabnine is better for teams with strict data privacy requirements since it can run locally. Copilot is free for verified open-source maintainers and students.
Frequently Asked Questions
✓ Pros
- Deep GitHub integration
- Works in most major IDEs
- Large codebase awareness
- Microsoft/OpenAI backing
- Chat interface available
✗ Cons
- Chat less powerful than Cursor
- More expensive for teams
- Requires subscription for most users
- Data used for training by default