This paper describes an artificial neural networking model developed to predict the behavior of flexible end-plate bare-steel joints in fire. The joint used in the study was typical to the ones used in multistory steel-framed buildings. The Applied moment and joint's temperatures were used as input parameters to model the rotational capacity of the joint with increasing temperatures. Data from experimental fire tests were used for training and testing the ANN model. Results showed that the R2 value for the training and testing sets were 0.9905 and 0.9932, respectively. This indicates that results from the ANN model compared very closely with the experimental results demonstrating the capability of the ANN simulation techniques in predicting the behaviour of flexible end-plate joints in fire with high accuracy. The described model can be modified to study other important parameters that can have considerable effect on the behaviour of joints at elevated temperatures.