Reviewing code in the agent era

In June 2026, Linear launched "Diffs," a feature designed to streamline the pull request (PR) review process, in response to an increase in code volume due to advancements in AI models and agents. This feature allows users to review code directly within Linear, making it easier to manage the surge of reviews without compromising quality. The tool provides a structured review environment by organizing changes into manageable chunks and integrating notifications to ensure timely feedback. It emphasizes understanding the rationale behind code changes, focusing on product sensibilities, user experience, and real-world impact, rather than just code correctness. This shift in focus enhances the role of engineers, encouraging a deeper engagement with the product's purpose and fostering collaboration within the team. As a result, even with increased PRs, Linear maintains high code quality, ensuring that shipped code is not only correct but also valuable to the product, reflecting a mature engineering culture that prioritizes accountability and meaningful contributions.

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