Comparison of stellar radii from different sources. Top : comparison between P4 radii estimated in this work (x-axis) and the radius_flame values from Gaia DR3 (y-axis), shown with a colour map representing the effective temperature. The radii from other literature works are also shown. The solid line is the 1:1 relation. Bottom : distribution of the differences between the P4 radii and Gaia DR3 radius_flame values and other external literature estimates.