All KitchenAid stand mixer are not the same as their dimensions but except the professional series because Profesional mixer such as KPM1XER and much more with the bowl lifters all are in this category. The professional mixers are taller and heavy duty than classic or artisan stand mixers.
Professional series is much taller comparative to the other essential home purpose stand mixers. But the question is very delicate when you think that:
How Tall is A KitchenAid Mixer?
As weight is increased or decrease for the stand mixer same it create an impact on the size and length of mixers. Such as check how tall KSM 150 PS is 14in, and most of the stand mixer in the product line are same taller as this one. But when it come to the professional series this look at KpM1xer it is 17.1in taller and good one. All other are lies in between that category.
For further also check out at the comparison chart for dimensions of Best stand mixers.