Harvard researchers studied 718 companies and found AI coding agents increased lines of code by 30%, but no meaningful increase in completed tasks or projects.

Meanwhile, review time rose 49%.

Generating code faster hasn’t translated into completing more work. The bottleneck has moved to code reviews.

The solution the industry is landing on is throwing more AI at the problem. AI writes the code, AI reviews the code and no one knows how it works.

https://fion.ac/jellyfish.pdf