Even more interesting is how much did the effort cost.

Unlike the development work of old (pre-2025), work with high-end models incurs a very direct monetary cost, one burns tokens which cost money, and you can't have something as powerful to be running locally (even if you happened to have a Mac Pro Ultra with RAM maxed out).

Some of my friends burned through hundreds of dollars a day while doing large amounts of (allegedly efficient) work with Claude Code.