To run Wolfram SystemModeler 12.3 on macOS, your system should meet these minimum specifications: System Modeler Quick Revision History - Wolfram
: Improved symbolic linearization when used in conjunction with the Wolfram Language. System Requirements for Mac Wolfram SystemModeler 12.3 for Mac Free Download
: Added plot markers and labels to model plots, with the ability to easily add variable references and links to plot captions. To run Wolfram SystemModeler 12
: Drastically reduced result file sizes and improved simulation speed through parallel compilation, leading to faster model building. leading to faster model building.