AI Automation for Code Review: Comparing AI Code Review Capabilities of GitHub, GitLab, and Sourcegraph

GitHub Copilot's code review feature is now generally available, automatically detecting security vulnerabilities, performance issues, and code style problems while providing fix suggestions. GitLab Duo has also updated its AI code review capabilities. Comparative tests show that AI code review catches about 30% of issues missed by human reviewers, especially in edge cases and security. However, the AI false positive rate remains around 15%, requiring human confirmation.