A proper characterization of the hydrodynamics of binary-solid liquid fluidized beds is an important first step in its effective utilization. Of particular importance in this connection is to be able to predict the unique hydrodynamic phenomenon of the layer-inversion, which is associated with the change of the stratification pattern of the two solid species in the fluidized bed brought about due to a change either in the liquid velocity or the bed composition. Past few years have witnessed the development of several models for the prediction of the layer-inversion phenomenon. It is, therefore, important to analyze their predictions in the light of the growing wealth of the literature data. Such an exercise is important to examine the underlying assumptions and propose modifications to improve their predictive capability. Predictions of well-known layer-inversion models are compared with the experimental data reported in the literature including our own which comprises of solid species of widely different size, and therefore, provide an important test of predictive capability of models.