How to Reduce Code Review Time by 50% - Proven Strategies and Tools

The code review bottleneck is costing you more than you think Code review is one of the most important practices in software engineering - and one of the most expensive. When done well, it catches bugs, spreads knowledge, and maintains code quality. When done poorly, it becomes a bottleneck that slows down shipping, frustrates developers, and drags team velocity to a crawl. The numbers are staggering. Research from Google's engineering productivity team shows that developers spend an average of 6.4 hours per week on code review activities. A study published by Microsoft Research found that the median time from PR creation to first reviewer comment is 15 hours, and the median time to merge is 24 hours. For larger organizations, these numbers are even worse - enterprise engineering teams report average cycle times of 3-5 days per pull request. LinearB's 2025 benchmarks, drawn from data across thousands of engineering teams, paint a similar picture. The median time-to-first-review sits at