Distribution of planet radii and orbital periods for all confirmed small planets hosted by low-mass stars (M_* ≲ 0.65 M_⊙). The solid and dashed lines represent the predicted locations of the radius valley based on the gas-poor formation model and thermally driven photoevaporation models, respectively. The red dot represents the planet TOI-1680 b. The 1D radius distribution, with the location of the planet TOI-1680 b, is shown on the right panel.