I have started to use it recently, and I am finding it useful as a code assistant.

1) It has been doing a good job reviewing my code, and could suggest some interesting performance improvements in the past.

2) It is good to generate things such as simple REST endooints, that sort of thing. Saves you a bunch of typing, even if you have to do some finishing touches yourself.

3) I think it generally does a decent job writing tests as well.

4) Current models have gotten really good at helping me explore libraries I am not very familiar with.

The AI hype may be very annoying, and I am skeptical that in the long run it makes financial sense, but it is a productivity boost once you get the hang of it.