Has the cost of building software dropped 90%?

> I've had Claude Code write an entire unit/integration test suite in a few hours (300+ tests)

I'd love to see someone do this, or a similar task, live on stream. I always feel like an idiot when I read things like this because despite using Claude Code a lot I've never been able to get anything of that magnitude out of it that wasn't slop/completely unusable, to the point where I started to question if I hadn't been faster writing everything by hand.

Claiming that software is now 90% cheaper feels absurd to me and I'd love to understand better where this completely different worldview comes from. Am I using the tools incorrectly? Different domains/languages/ecosystems?

100% agreed. I use Claude Code to write 90% of my code at this point, but have found that it is genuinely worse than a junior at writing meaningful test cases. Most of the time it will make up interfaces or mock things incorrectly etc to the point where I just give up and write them myself. The bulk of the “tests” it writes test things which are meaningless (does the interface exist etc). This is with typescript + vitest with opus 4.5.