Comparison between z_phot and z_spec. The number count (N), average bias (|Δz|), scatter (σ), and outlier fraction (|Δz|> 0.15) of all sources (blue squares) with available spectroscopic data are reported. The region with darker colors corresponds to a higher number of sources within the 2D histogram bins. We also show the metrics for a subset that satisfies our high-z selection criteria (white circles with error bars). Samples of spectroscopically confirmed AGNs from the literature are depicted with red circles.