Using just those two options is an oversimplification. It’s not simply a tool, because it doesn’t assist a human in performing a task they couldn’t do — it does it for them. In the intellectual and creative realm, it’s not assisting, it’s doing. Nothing generated by AI from a human prompt is the work of that human. Nor is it an entity — it’s an organized logic that understands our language and how we use it, and it expresses results accordingly. There’s no actual intelligence behind it, just machine learning. Nothing we’ve solved or created as humans has been or will be surpassed by machines, because they can’t create solutions on their own without prior references.