coatnet_4_cls(pretrained: bool = False, overrides: object = {})CoAtNet-4 image classifier (Dai et al., 2021).
Deepest of the CoAtNet-0..4 series — same dims as CoAtNet-3 but with
blocks_per_stage=(2, 12, 28, 2). Approximately 275M
parameters, 85.0% ImageNet-1k top-1 at 224x224 (Table 5).