Fastly‘s new survey on developers using AI for coding shows that 90% of developers are now using AI coding assistants like GitHub Copilot, Gemini or Claude. But if you dig into the numbers, the perceived productivity gains may be illusory.
Senior Devs Are All In, Juniors Play It Safe
The survey of nearly 800 developers showed that senior developers with over a decade of experience are shipping 2.5 times more AI-generated code than junior developers. The numbers indicate that one-third of senior devs say more than half their production code…








