Where LLM shine is as a faster alternative to Google and Stack overflow. "How do I reverse an array in language X?". This will give you the right answer in seconds without having to click through garbage.

Especially if it's a question that's hard to Google, like "I remember there is more than one way to split an array in this language, list them". This saves me minutes every day.

But it's especially helpful if you are working on projects outside your own domain where you are a newbie.