What The Diff

What The Diff uses AI to automatically generate plain-English summaries of pull request changes, making code reviews more accessible and efficient for both technical and non-technical stakeholders. It analyzes diffs to highlight the intent and impact of changes, describe what functionality was added, modified, or removed, and flag potential issues such as missing error handling or unintended side effects. Summaries are posted as PR comments automatically when pull requests are opened or updated.

The platform integrates with GitHub and GitLab, requiring minimal setup -- typically just installing the GitHub App or GitLab integration and selecting which repositories to enable. Enterprise teams can configure summary detail levels, language preferences, and which file types to include or exclude from analysis. What The Diff provides team analytics showing PR velocity, change complexity trends, and summary usage across repositories.

What The Diff is designed for organizations where engineering and product teams need to stay aligned on what code changes are shipping and why. Its differentiator is the focus on human-readable communication rather than technical code review -- while other tools provide line-by-line code feedback, What The Diff translates diffs into narrative descriptions that product managers, technical writers, QA teams, and engineering managers can understand without reading the code. This bridges the information gap between developers and other stakeholders, reducing the need for status meetings and manual changelog authoring.