The calculated prompt gamma spectra emitted from the spontaneous fission of 252Cf using GEF (black line) and FREYA (red line), as compared with experimental data from Billnert et al. (2013; purple dots) and Qi et al. (2018; gray dots). The prompt gamma spectra emitted from the β-decay of the 125Sn ground state (blue line) taken from ENDF/B-VIII.0 is also shown.