Comparison between the model metallicities inferred from the multi-cloud modeling of the CHAOS sample (x axis) and the T_e metallicities derived from the line fluxes predicted by the same models (y models). The red dots represent the best models for each HII region of the sample, while the green dots represent all “acceptable” models, that is those with ℒ < ℒ_min + 0.25. The solid blue line represents the 1:1 relation, while the dotted blue line represents the case where T_e metallicities are 0.1 dex lower than model metallicities.