YOLO–CL and redMaPPer MCXC2021 cluster detection completeness as a function of redshift and X-ray surface brightness. Left: YOLO–CL detects ~98% of the MCXC2021 clusters with I_X,500 ≳ 20 × 10⁻¹⁵ erg s⁻¹ cm⁻² arcmin⁻² at 0.2 ≲ z ≲ 0.6 and ~100% of the MCXC2021 clusters with I_X,500 ≳ 30 × 10⁻¹⁵ erg s⁻¹ cm⁻² arcmin⁻² and z ≳ 0.3. Right: redMaPPer detects ~98% of the MCXC2021 clusters with I_X,500 ≳ 55 × 10⁻¹⁵ erg s⁻¹ cm⁻² arcmin⁻² at 0.2 ≲ z ≲ 0.6 and ~100% of the MCXC2021 clusters with I_X,500 ≳ 20 × 10⁻¹⁵ erg s⁻¹ cm⁻² arcmin⁻² at 0.5 ≲ z ≲ 0.6. On the right of each figure, we give the completeness scale. From this comparison, YOLO–CL is more complete than redMaPPer in detecting MCXC2021 clusters.