Radius from GRAVITY and Keck/AMBER NIR interferometry, measured relative to the empirical radius-luminosity relation from reverberation mapping (Suganuma et al. 2006; Koshida et al. 2014). Reverberation sizes are shown for comparison, and the error bars correspond to 1σ in all cases. Both interferometry data sets show a larger median size R/R_in >  1 and decreasing relative size with increasing luminosity, particularly evident as R/R_in ≲ 1 for quasars.