What's one paid AI tool you actually use that never gets mentioned in here, and what does it do that ChatGPT or Claude can't?

Not looking for the big three. I mean the thing that quietly renews every month and that you would be annoyed to lose.

Two lines is fine: the tool, and the one job it does that a general assistant still does badly.

I'll start. Mine is a transcription tool I keep for one reason, which is that it gets speaker labels right on bad phone audio. The general assistants will transcribe, but they hand back a wall of text with no idea who said what, and fixing that by hand costs more than the subscription.

If the tool you name is one nobody here has heard of, even better. That's the point of the thread.