modeFRONTIER 4.5 | what's new Version 4.5 introduces new essential features and enhancements aimed at increasing engineering productivity, improving user experience, and shortening the design cycle. Along with the intuitive user interface and enhanced evaluation capabilities, modeFRONTIER new key features include improved RSM validation functionalities, an easier integration with third party software through the Parameter Chooser, and sophisticated multi-criteria decision-making tools for exploring what-if scenarios.