A system described herein may identify a relative feature importance of a set of features in a modeling and/or simulation system. The same set of features may be provided to a group of different models. A relative feature importance of each feature of the set of features may be determined, on a per-model basis, based on comparing outputs of the model with and without particular features of the set of features. A relative feature of each feature may be further be determined on an inter-model basis by identifying features that are commonly ranked highly in the per-model rankings. An iterative process may evaluate the highest ranked, next-highest ranked, etc. features across multiple models. A simulation system may utilize the rankings to more efficiently perform one or more simulations, which may include omitting one or more features of the set of features when performing the simulations.