AI Code Review Tools Are Useful but Cannot Replace Human Engineering Judgment

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AI-powered code review tools such as GitHub Copilot, ChatGPT, Claude, and Gemini can rapidly identify bugs, security vulnerabilities, code smells, and performance issues in software. These tools are particularly effective at spotting common programming mistakes, suggesting refactoring, and helping developers understand complex or unfamiliar codebases. However, AI lacks the contextual understanding needed to evaluate business logic, regulatory requirements, large-scale system architecture, and organisational priorities. Experienced human reviewers remain essential for assessing why code exists, recognising intentional design decisions, and weighing trade-offs that go beyond technical correctness. Experts recommend a combined approach: running an AI review first for surface-level issues, followed by a human review focused on deeper architectural and business concerns.

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