Copilot

AI & Machine Learning

Definitions

  1. An AI-powered code completion tool developed by GitHub (Microsoft) that suggests code as you type in your editor. Built on OpenAI's Codex model (a GPT descendant fine-tuned on code), Copilot was the first widely adopted AI coding assistant and fundamentally changed how developers write software. It works as an IDE extension that provides inline suggestions ranging from single-line completions to entire functions. Copilot Chat added conversational coding assistance. The tool sparked both enthusiasm (dramatic productivity gains for boilerplate and unfamiliar APIs) and controversy (training on public repositories, licensing concerns, and questions about code quality). It paved the way for a wave of AI coding tools including Cursor, Cody, and Claude Code.

    In plain English: GitHub's AI assistant that suggests code while you type, like autocomplete on steroids. It can write entire functions, explain code, and help you work faster in your editor.

    Example: Copilot wrote the entire boilerplate for my Express API routes. I just reviewed and tweaked the logic.