Among the most cutting-edge, DeepZen offers rates that can slash the cost of producing an audio book to one-fourth, or less, that of a traditional project. All the audio book companies contacted by AFP denied using such practices. 'Accessible to all' Early this year, Apple announced it was moving into AI-narrated audio books, a move it said would make the "creation of audio books more accessible to all," notably independent authors and small publishers. Among the most cutting-edge, DeepZen offers rates that can slash the cost of producing an audio book to one-fourth, or less, that of a traditional project. 'Accessible to all'Early this year, Apple announced it was moving into AI-narrated audio books, a move it said would make the "creation of audio books more accessible to all," notably independent authors and small publishers.