I use it mainly to research the web, research competitors.
I used it for JTBD to explain the step-by-step process of our client's business flow (I am a b2b PM). Then, I checked with the colegue that worked with such clients for 10 years and got only two edis from her.
And the last thing I use Cursor with our GitHub repo to make SQL queries to our DB, and just exploring the already made logic (because we don't have any documentation, the only way to understand the parts we made is to ask Claude)
What about you? How do you use LLM's day to day?