TBH I have no idea [1] but I have quite a low limit of expenses using the API (10 bucks) and I'm yet to reach it.

Besides that, you can as well log in via web (That I haven't done, but it's possible)

As a side note, even thought the friction might be too high I couple it with the same programmer's MacWhisper, so that when I need a large text I just speak to the computer.

[1] Geez. I just checked, and my cumulative expenses for June are a staggering 0.27 USD