Fabrication

An AI error where the model generates content that does not exist in the input, such as describing objects not present in an image, inventing text that does not appear in a document, or creating details that are entirely fictional. Fabrication is distinct from misinterpretation (incorrectly identifying something that is present) and omission (failing to mention something that is present). In the context of image descriptions for BLV users, fabrication is particularly dangerous because the descriptions sound plausible and confident, and blind users cannot visually verify the claims. For example, an MLLM might describe a family photo in an empty picture frame.