I'm not a native english speaker, so I've used for an essay where they told us to target a certain word count. I was close, but the verbiage to get to that word count doesn't come naturally to me. So I used Germini and tell it to rewrite the text targeting that word count (my only prompt). Then I reviewed the answer, rewriting where it strayed from the points I was making.

Also I used it for a few programming tasks I was pretty sure was in the datasets (how to draw charts with python and manipulate pandas frame). I know the domain, but wasn't in the mood to analyse the docs to get the implementation information. But the information I was seeking was just a few lines of sample code. In my experience, anything longer is pretty inconsistent and worthless explanations.