If people are finding new ways to use AI, they should change how they bill. Banning third party harnesses is bad for a lot of reasons - it looks like they're trying to force people to use their software. Strategically it might make sense - gives them a tiny moat if their models ever slip - but it discourages the breakneck pace of innovation and the long term effect is that their customers (largely highly skilled with computers and building software) will look to decouple themselves. Claude is good but it's not so far better than anything else that they can pull shit like this and people will just deal with it.

They already have the regular subscription plans (Pro, Max) and a separate billing process for direct API usage. They could absolutely introduce another type of plan optimized toward this kind of usage or just accept that it's a dumb pipe that is being paid for and having these random arbitrary limitations is just making things more confusing and a bad plan for the future.