GitHub Copilot Code Review: Complete Guide (2026)

What Is GitHub Copilot Code Review? GitHub Copilot code review is an AI-powered feature that analyzes pull requests directly within the GitHub interface and posts inline comments on potential bugs, security issues, performance problems, and code quality concerns. Instead of waiting hours or days for a human reviewer to look at your PR, you can assign Copilot as a reviewer and receive automated feedback within minutes. This feature is part of GitHub's broader strategy to embed AI into every stage of the software development lifecycle. Copilot started as an inline code completion tool in 2022, expanded to include chat in 2023, added code review in 2024, and launched an autonomous coding agent in late 2025. Code review fits naturally into this trajectory - if Copilot can help you write code, it should also be able to help you review it. The March 2026 agentic architecture overhaul was the turning point. Before this update, Copilot's code review was limited to shallow, line-by-line diff an