OverDrive allows audiobooks narrated by synthetic voices — generated by software rather than human performers — to be sold through its catalog and borrowed by library patrons. The company does not screen these titles out, and relies on publishers to voluntarily label them. This policy has been in effect at least since 2024.

In October 2024, librarian Robin Bradford identified over 1,200 audiobooks in her library's OverDrive catalog that carried narrator credits indicating synthetic voices (e.g., "Scarlett Synthesized Voice"). OverDrive's CMO confirmed the company does not exclude AI-narrated content and instead requests that publishers self-identify such titles in metadata — a process that is voluntary and not enforced. Investigators also raised concerns that some titles may be AI-written as well, based on suspicious author name patterns and minimal author web presence. No enforcement mechanism currently exists to ensure disclosure compliance.