The model source describes the source type from which the model was developed to power the AI feature:
Proprietary: The AI/ML model was developed internally by Autodesk.
Open source: Autodesk uses AI/ML model that was developed by a third party, who made it available to the public.
Licensed: Autodesk has a license to use the AI/ML model that was developed by a third party.
Combination: Part of the AI/ML model was developed internally by Autodesk, and the other part(s) were developed by a third party (open source and/or licensed).