Auditing the Synthetic Memoir: Measuring Scene-Level Confabulation in LLM-Generated Autobiography Against the Documented Record of the Life It Describes
This paper presents the first quantified, scene-level audit of an LLM-generated autobiography against a ground-truth record, revealing a 96.7% verification failure rate dominated by "grounded drift" (invented scenes using real people and settings) and demonstrating that while grounding generation in the subject's actual corpus improves accuracy, substantial hallucination persists.