This model can encode 224x224 RGB image into 28x28x13bit (1274 bytes) latent. The compression rate is 28x28x13/(224x224x24)=1/118, or 0.203 bpp (same as VQGAN_f8_8192).
12M params for Encoder + Decoder. Trained on LAION-Aesthetics V2 5+ for 238M images.
Update: Now with 50M and 200M params checkpoints too :) Check the files.