AI coding agents generate more code, but not more software

The introduction of AI coding agents has led to a 49 percent increase in the average review process time for pull requests, with the share of pull requests with changes requested nearly doubling and comments per pull request increasing by 35%. While 80 percent of firms used some form of AI code review by March 2026, AI agents were only responsible for 23.3 percent of review comments and 10.8 percent of pull requests, indicating that humans still bear the majority of the review burden. This suggests that increased coding speed is offset by longer human review times.

This report uniquely quantifies the trade-off of AI coding agents, showing a 49% increase in code review time and a near-doubling of change requests, unlike other studies focusing solely on code generation speed.