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The VAE used for Stable Diffusion 1.x/2.x and other models (KL-F8) has a critical flaw, probably due to bad training, that is holding back all models that use it (almost certainly including DALL-E 3).
Short summary for those who are technically inclined: CompVis fucked up the KL divergence loss on the KL-F8 VAE that is used by SD1.x, SD2.x, SVD, DALL-E 3, and probably other models. As a result, th