CircleCI published their "State of Software Delivery" report.

For the median team:
- Output increased by 4%: 15% increase on feature branches but 7% decline on the main branch (because the generated code struggles to meet quality bars)

- Time to fix issues on main increased by 13%. On feature branches, with more LLM-generated code, the time to fix increased by 25%

- Rate of successful test passes on the main branch is 71%, the lowest it's been in five years

https://circleci.com/resources/2026-state-of-software-delivery/