Hi Anis, I have not actually spent much time using Revit myself so you will probably want to get some more information from an actual Revit user. I can only give you a kind of general impression.

> Is there any specific shape or model that Revit can not
> achieve, and MoI can do it ?

From what I have seen, I think that Revit is itself more focused on assembling components together, like building walls, inserting windows, stuff like that. But I don't think it has very much for creating more general freeform surfaces, things like you would create with MoI's Sweep or Network surface tools for example.

If your project is made up of standard type shapes then you'll probably be set with Revit's built in tools, but if you want something that is more freeform then that's probably the areas where you could do it in MoI and then import it into Revit.

- Michael