A lot of AI productivity claims sound impressive until you ask what was actually measured."10x developer productivity" u...

A lot of AI productivity claims sound impressive until you ask what was actually measured."10x developer productivity" usually means one of three things:More lines of codeFaster task completion in a benchmarkA subjective feeling that work is moving fasterThose are weak signals.Lines of code are easy to inflate. Benchmarks are not production systems. And generating code quickly is not the same as shipping working software safely.I wanted a better answer for my own work.I own and operate MachDuDas, a German marketplace that has existed for more than a decade. The repository has years of history from conventional development teams, before generative AI was part of the workflow.Today, I am effectively the only human driving development, but I work heavily with AI coding agents.That gave me something close to a natural experiment:Same product. Same codebase. Different development model.The question was simple:How much engineering capacity have AI agents actually given me? The first measurem...