Microsoft's AI Code Review Cut PR Time by 10–20%, But Speed Isn't the Full Story

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Microsoft's PRAssistant tool processed over 600,000 pull requests per month across 5,000 internal repositories, covering more than 90% of PRs and achieving a 10–20% median improvement in PR completion time. The metric reflects faster queue throughput — not necessarily higher code quality — since automation that clears routine reviews can accelerate merges without ensuring human reasoning over the code. Microsoft later released PRAssistant externally as GitHub Copilot code review, making the internal benchmark the baseline expectation rather than a guaranteed outcome for all teams. Experts caution that the 10–20% figure should not be cited as evidence the tool catches more bugs, as it measures when work moves, not what quality lands. Teams adopting similar tools are advised to track both time-to-merge and post-merge regression rates separately to get a complete picture of performance.

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React 19.3 Officially Releases with Stable View Transitions and Fragment Refs

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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