Comparison of our derived metallicities with those from the Andrae et al. (2023b) (XGBOOST) and Martin et al. (2023) (CaHK_synth) catalogs. Top (from left to right): Metallicities of our, XGBOOST, and CaHK_synth catalogs are plotted, respectively, for the GALAH-SAGA validation dataset ([Fe/H]_ref). The color-coding reflects the effective temperature of the stars. Middle and bottom: same as the top panels but the color-coding depicts the color excess and surface gravity, respectively. The solid black line shows the 1–1 line, while the dashed lines show a σ = 0.36 dex uncertainty.