Metallicity comparison between [Fe/H] values from Nandakumar et al. (2023), based on high-resolution spectra, and [M/H] from Gaia RVS by the GSP-Spec module (top panel), for stars having good quality flags for the metallicity estimate, and Gaia XP spectra (bottom panel, from XGBoost). Stars having KMgiantPar = 0 are shown in green circles while those having KMgiantPar≠0 are shown as blue circles. The median difference and dispersion of each group are also reported.