Carrier Adding a Cellular iPad to AT&T Mobile Share Plan?

[DotCom2]

What is the current monthly cost to add a cellular iPad to an AT&T 20GB Family Mobile Share Plan? The only info I could find was old and outdated. Also, is it just a data plan or does it also support texting?
TIA

 

[Crow_Servo]

What is the current monthly cost to add a cellular iPad to an AT&T 20GB Family Mobile Share Plan? The only info I could find was old and outdated. Also, is it just a data plan or does it also support texting?
TIA

$10/month. Data only, but it does include the ability to tether (personal hotspot), just like the phones do.