DFT dataset consisting of 6828 resampled Pt-Ni alloys used for training an NNP. The energy and forces of each structure in the resampled database are calculated using DFT. All reference DFT calculations for the training set of 6828 Pt-Ni alloy structures have been performed using the Vienna Ab initio Simulation Package (VASP) with the spin-polarized revised Perdew-Burke-Ernzerhof (rPBE) exchange-correlation functional.