ISE API cost

[DellBananaALK]

Someone said the ISE API costs money, but I was wondering if someone could break down how the cost works.
Is it just pxGrid and OpenAPI that aren’t charged?

[Arne Bier]

According to the ISE Licensing Guide (see Table 2 in the link), pxGrid is licensed by having Advantage subscription licensing - quantity is not relevant - you just need to have the minimum. 

API does not need any specific license - if you have your Essentials/Advantage/Premier, then you're fine. If you run ISE as a VM, then every ISE that is a VM, needs a VM license.