Survey: a third of senior developers say over half their code is AI-generated
Fastly’s July 2025 survey of 791 developers found a notable difference in how much AI-generated code is making it into production. About a third of senior developers (10+ years of experience) say over half their shipped code is AI-generated — nearly two and a half times the rate reported by junior developers (0–2 years of experience), at 13%. “AI will bench test code and find errors much faster than a human, repairing them seamlessly. This has been the case many times,” one senior developer sai