The hard science tells us these artificial sweeteners contain 0 calories, and 0 anything else. It's purely taste and no harm of any sort. That's the hard truth. They are 0 calories sweeteners, and there are no hidden calories in them. You'd die trying to survive off 0 calorie foods. There is no disputing that.

With the hard science out of the way comes the dilemma of separating bad data humans provide, with any sort of response from the human body. We can obviously taste sugar. There's a chance our bodies respond the sweet taste some way. Maybe the taste makes us more hungry. In evolutionary terms it's not the most stupid idea if you think about hunter-gatherers a few hundred thousand years ago.

But that is speculation only. It's possible that it's all bad data and that artificial sweeteners do nothing at all. We just don't know. We need more data on the subject.

Your question can't be answered. We don't know. It's an ongoing point of research.