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Audible's old royalty model ends on 31 December. What authors with audiobooks should check

ACX's new 50/30 royalty model has been open to everyone since 26 May, and the legacy model closes at the end of the year. If a narrator shares your royalties, they get a say in the move.

By James Jones, founder of Granary Digital · 28 September 2026

Audible announced a new royalty model on 28 April 2026 and opened it to everyone on 26 May. It pays 50% for exclusive titles and 30% for non-exclusive ones, from a pooled "Member Value". The legacy model ends on 31 December 2026. And if an audiobook was made on a royalty-share deal, the narrator has to approve each title's migration, VoiceOver Herald reported on 23 September.

That leaves a little over three months to go through a back catalogue title by title.

Who has to decide

ACX is open to rights holders and producers resident in the US, the UK, Canada and Ireland, with a mailing address, a local tax ID and a bank account in that country. The rights holder can be the author, a publisher, an agent or an estate. Whoever holds the audio rights on ACX is the person this deadline belongs to. If that is your publisher, ask them what they plan to do with your titles.

The checklist

  1. List every title and the model it is on now. A spreadsheet with four columns is enough: title, model, exclusive or not, and who narrated it on what terms.
  2. Choose exclusivity title by title. 50% exclusive against 30% non-exclusive is a real gap. Non-exclusive is what lets an audiobook sell elsewhere, on Spotify for instance. A title that sells almost entirely through Audible and one with readers on other platforms may deserve different answers.
  3. Talk to royalty-share narrators now. Each title's move needs their approval, and a narrator who is away for most of December is not a plan.
  4. Ask ACX what happens to a title nobody moves. We haven't seen it set out in a source we trust, so get the answer from ACX in writing.
  5. Check the audio against today's spec if you're thinking of re-releasing anything. ACX's requirements page was updated on 15 April 2026: RMS between -23dB and -18dB, peaks below -3dB, a noise floor below -60dB RMS, 192 kbps or higher CBR MP3 at 44.1kHz, one chapter per file and no file longer than 120 minutes. It now recommends between one and five seconds of room tone at the start and end of each file. The same page says a title "must be narrated by a human unless otherwise authorized".
  6. Decide which titles deserve a new recording. A change of terms is a natural moment to listen back and ask whether the recording still does the book justice.

The AI route, and its label

Cheaper narration exists, and on some platforms it comes with a label. Audible opened AI narration to publishers on 13 May 2025, with more than 100 AI voices. ACX's narrator voice replicas are a US-only, invite-only beta, and titles made with them are labelled in the narrator field. Spotify has accepted audiobooks narrated with ElevenLabs since 20 February 2025, marked "This audiobook is narrated by a digital voice", and in June 2026 opened an invite-only beta of an ElevenLabs creation tool inside Spotify for Authors. Whether UK authors can use that tool is not confirmed. We found no new Audible AI narration launch for UK authors this year.

How book listeners feel about it is harder to pin down. The nearest UK figure comes from podcasts: Edison found in July 2026 that 85% of UK weekly podcast consumers disapprove of AI hosting. It is a different medium, so treat it as a signal and no more.

The maths before you book a studio

ACX says most performers narrate about 9,300 words per finished hour. Say your book is 75,000 words: that is about eight finished hours. ACX estimates roughly 6.2 hours of production for each finished hour, two to record, three to edit and 1.2 to review, which puts the whole job at around fifty hours of work.

We plan on a slightly more cautious 9,000 words per finished hour, and allow two studio hours per finished hour for an experienced narrator and three for an author reading their own book for the first time. So the same 75,000-word author should expect somewhere between seventeen and twenty-five hours at the microphone, spread over several sessions so the voice stays consistent. The full working is in the finished-hour maths, and the ACX side is covered in recording an audiobook for ACX.

In our audiobook studio an engineer runs every session, the first hour goes on finding your reading voice before anything is kept, and the edit and master are delivered to the platform's spec. Whole books are quoted as a block from the word count, so a slow session never costs you more.

If one of your titles is worth recording again, send us the word count and we'll send back the plan.

Sources

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