Wolfram SystemModeler 4.2 What's New in SystemModeler 4 SystemModeler 4 vastly expands support for modeling libraries, adds standardized deployment of models to other simulation tools, and deepens integration with Mathematica. Performance Improved core technology, compiler, and 64-bit Windows version allow for faster model compilation and larger models. Usability Parameters and variables can be changed in specialized editors, including an array editor, color picker, and more. Integration Automatically create models from any data source or digital filter with the Wolfram Language. Simulation results are retrieved faster and plots are more accurate.