I pasted in a code snippet and asked if it was threadsafe (I already knew it wasn't) and it confirmed what I knew, and gave a simpler solution that worked for my particular use case that what I would have done.

Anything to do with threads is hard™ and it did it.

Though I think the big thing less tech savvy users have yet to realize is: GIGO still applies. If your prompts are bad, the output is bad. And if you didn't know your prompt was bad, it's almost impossible to know the output is too.