I browsed the research on this some time ago. From what I remember the sweet taste is not enough, as some sweeteners were tested and didn't produce the insulin

I browsed the research on this some time ago. From what I remember the sweet taste is not enough, as some sweeteners were tested and didn't produce the insulin spike. There was only weak evidence for one of the sweeteners causing a similar effect when tested. If I remember correctly, Aspartame didn't cause the spike. The problem is that with most diet sodas they won't tell you which sweeteners they use exactly, and in which proportions.