This document reviews the behavior of special moment resisting frames (SMRFs) and intermediate moment resisting frames (IMRFs) during earthquakes. SMRFs are designed to withstand significant inelastic deformations in high seismic regions, while IMRFs are intended for moderate deformations in low to mid seismic areas. SMRFs have stricter design requirements than IMRFs. Analysis showed that SMRFs have greater collapse capacity and longer progressive collapse duration than IMRFs, reducing risk of structural sidesway collapse by 33.4% compared to IMRFs. The use of SMRFs also increases required column longitudinal reinforcement by 40% over IMRFs.