Bing chat uses DALL-E for image generation. The results were complete gibberish. Characters that looked like an alien alphabet and the graphic was also so abstract to not represent anything.
Models like DeepFloyd IF work in pixel space, without learning a latent space. This means they can capture much more detail, but require more computational power. This is why these types of models usually rely on creating a smaller image and then using a separate model to upscale the image.