The variance is extreme though. Thanks to Claude Code and Codex I've been able to make several non-trivial internal tools and libraries without writing much in

The variance is extreme though. Thanks to Claude Code and Codex I've been able to make several non-trivial internal tools and libraries without writing much in terms of code, just some reviews here and there. I spent a couple of days on those, and its would have taken me months to write manually I am sure, so in that regards it's close to 50x. I've also had Claude track down some logic issue in a module I was unfamiliar with which had very large and complicated flows. Would have taken me many days, since I did not have a reproducible case, so had to go by logs and customer description alone. I spent 5 minutes writing a prompt and when I checked back, Claude had identified the issue. The fix I had to implement myself, but was fairly easy. So there Claude definitely was a 100x increase in productivity. Then there are cases where they're much more modest, or where they might even be negative, when they think they're fixing stuff but actually are introducing more bugs.