Well to give to a concrete example. I use it to write test cases for the CRUD applications that I sometimes have to work on. Some test cases already exist and I feed the tests and actually code including additional instructions into a model and get relatively decent output. We also use a code review bot that we feed repository relevant instructions to and get decent basic PR comments. It even caught an edge case that 3 other developers didn't consider.

I think AI can be yet another tool that takes some repetitive tasks off my hands. I still obviously check all the code it generated.