I’m sure it depends on the project, stack, and dev. I know loc is a terrible metric, but …

For me, my human only productivity in the firmware work I do is usually around 100-500 loc a day on good days. Obviously more when clean-slating the initial work on a project , but that’s typically a day or two and the same ratios apply.

With ai tools, I roughly 4x that with the same effort, or 2x it working lazily from my phone playing with my 2 year old.

The code is typically also more compact so the LOC metric is strong here IMHO.

Overall I have about the same number of bad-unproductive days, far less bugs (but worse bug hunts) and 10x better documentation lol.

Coding is definitely a different job though.