GitHub Copilot
AI pair-programmer inside your editor — autocompletes code and answers in-context.
What it is
Copilot suggests code as you type, completes functions, and can chat about your code inside popular editors like VS Code. It’s the most widely used AI coding assistant for everyday development.
Best for
- Speeding up everyday coding and boilerplate.
- Learning a new language or framework by example.
Best practices
- Write a clear comment first; the suggestion follows your intent.
- Read every suggestion before accepting — don’t autopilot.
See it in action
Arjun needed a validator for Indian phone numbers and didn’t want to write it by hand.
// function that validates an Indian phone number and returns E.164 formatResult: Copilot completed the function from the comment; he added a test and moved on.
Example prompts
// function that validates an Indian phone number and returns E.164 formatA guiding comment produces the function.
Pro tips
- Best for small, local suggestions; use an agent tool for big tasks.
- Always test AI-written code before trusting it.
Updated: 6 Jul 2026 · 2026 Edition
