Comparison of the ages (top) and the masses (bottom) between the estimations obtained in this work and with those of FLAME-Spec (left) and FLAME-Phot (right). Only GSP-Spec turn-off stars with the first 13 GSP-Spec flags equal to zero are selected here, with age uncertainties (both in our code and the FLAME modules) smaller than 50 per cent. Contour lines contain 33, 66, 90, and 99 per cent of the distribution. The colour-coding is the GSP-Spec calibrated [M/H].