AI Writes More of Your Code Now. It Also Ships More Reliability Risk.

Sun, 26 Jul 2026 08:00:00 -0700

A 2025 study of 470 pull requests found that AI-generated code shipped roughly 1.7x more issues and about 1.4x more critical defects than human-written code. Nobody serious reads that as “AI code is bad,” and I’m not arguing it either; much of what an agent writes is clean, idiomatic, and correct. The trouble starts when you sit a real workflow on top of that number: volume times defect rate, pointed at the part of the system that hurts most when it breaks.

Defect-Rate on Revelara

AI Writes More of Your Code Now. It Also Ships More Reliability Risk.