Is the T-Mobile iPhone 5 at all different?

I'm sorry if this has been answered here before, but I couldn't find a very clear answer when I briefly looked just now and I was wondering if there is any difference between the AT&T and T-Mobile iPhone 5s. I know that they are both GSM, but I'm wondering if any of the supported bands are at all different...

A T-Mobile one is going cheaper on CL so I'm just wondering. Thanks!