they already do, you can give claude code an API key and it charges per token.
this entire thread is people whinging about the "you get some reasonable use for a flat fee" product having the "reasonable use" level capped a bit at the extreme edge.
No, I mean, a one-click (or no-click) upgrade path. Having to hit a wall and then go get your API key and stuff sounds like a pain. It should just ask you if you want to switch to usage-based pricing when you hit the limit.
