Yes, most of the time. However, if the model includes a tool that is not available in ArcGIS Pro, the model will not work. You may need to wait until that tool is available in a future release of ArcGIS Pro. Alternatively, you may be able to remove the tool and use a workaround. Additionally, if a tool in the model has changed in ArcGIS Pro, the model will not work until you update the model (make a backup of the toolbox, open the model in ArcGIS Pro, validate, and save the model). Refer to a tool’s help topic to determine what needs to change for the tool to work in ArcGIS Pro. One common issue is that the Calculate Field tool no longer supports Visual Basic (VB) expressions. Learn more about migrating ModelBuilder workflows to ArcGIS Pro.