The AI label appears only on mobile and not on the web likely because of differences in how the platforms display and process images. Instagram's AI detection system may be more sensitive or specifically designed for mobile app usage, leading to the label appearing only on that platform.
Meta adds the "Made with AI" label to photos created with AI tools from Google, OpenAI, Microsoft, Adobe, Midjourney, and Shutterstock. The company identifies AI-generated photos by looking for metadata added to image files that signify the use of these AI tools2.
PetaPixel conducted a test by using Photoshop's Generative Fill tool to remove a speck from an image. They then uploaded the edited image to Instagram, which resulted in Meta marking it as AI-generated. However, when PetaPixel loaded the file back into Photoshop, copied and pasted it onto a black document before saving it again, Instagram did not flag the image as AI-generated.