Quasar (thick solid lines) and radio (faint dashed lines) mode fractions for AGN in fable as a function of redshift. All models show a clear average decrease with redshift of AGN fraction in quasar mode. The quasar mode dominates at |$z \gtrsim 4$|⁠, whereas the radio mode becomes more important below this redshift. The Fiducial model has an overall higher quasar mode fraction due to its lower quasar mode threshold (see Table 1).