Precast technology is common worldwide, but in India, the level of acceptance is less, although it has many advantages over traditional cast-in-place construction. In precast technology, the components are cast in a controlled environment under strict quality control, but the connections between these elements are prepared on-site. These connections are considered more vulnerable to damage. In the present study, different types of modeling of the wall slab wall (WSW) precast connection are investigated for a four-story WSW building having a precast wall and slab. For the WSW system, two types of analysis are performed: (i) slabs and walls modeled by shell elements, and (ii) slab and walls modeled by beam elements converting slab to a grid. Three types of modeling of WSW with regards to inelastic behavior are envisaged, namely, (i) an inelastic (nonlinear) link at the connection and an elastoplastic behavior at a node 0.1L (L is the directional distance of the slab) distance from the connection link; (ii) only inelastic link at the connection; and (iii) inelastic link at the connection and a default hinge (available in SAP2000) at a node on 0.1L distance from the connection. The nonlinear time history analysis of the WSW system under a suit of earthquakes is carried out to obtain the response quantities of interest. They include base shear, MIDR, maximum story displacement, and a number of plastic hinges. Three levels of PGA are considered for the analysis. The responses obtained from different types of inelastic modeling are compared for different PGA levels.