Top panels: Age estimates of GALAH DR4 stars from the NN trained on BaSTI compared to those from NNs trained on (from left to right) MIST, PARSEC, Dartmouth and SYCLIST evolutionary grids. Running medians are shown in white lines, as well as a one-to-one black dashed line to guide the eye. Bottom panels: Running median of the difference Δτ between the age estimates of our BaSTI-trained NN and other NNs in solid lines, and associated standard deviations in shades areas.