Book-to-audiobook API

5.7easy start · #21 of 24
in AI Audiobook Generators

Free to practise onnot on record
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on api, Web.

Book-to-audiobook API is ranked #21 of 24 in AI audiobook generators on The Geeks Club. It runs on API, Web. There is no free plan.

Book-to-audiobook API plans and pricing

All plans

Pay per audiobook Not published from 500 sats · priced per character · quote shown before generation EPUB, PDF, or TXT · up to 50 MB · three quality tiers sats4ai.com · 7 Oct 2026

Compared on AI audiobook generators

Free plan: No
Chapter handling: Yes
Audiobook export: Yes
Voice cloning: Yes
Voice languages: 602 languages

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The record

Book conversion: The service turns EPUB, PDF, or TXT files into chaptered M4B audiobooks.
Language coverage: The product page says audiobooks can be narrated in 602 languages.
Voice options: Users choose among three quality tiers and select a voice before generation.
Chapter markers: Completed audiobooks are downloadable as M4B files with chapter markers.
File handling: Uploaded files are kept for 72 hours to address conversion faults, then deleted.
Input limits: The upload form accepts EPUB, PDF, or TXT files up to 50 MB and recommends EPUB because PDF and TXT results vary.
Payment and access: The service charges per use in Bitcoin Lightning sats and requires no account or card.
Developer integrations: Sats4AI documents L402 over HTTP, MCP, and WebLN as integration options for its services.
API job handling: Audiobook jobs run asynchronously and can be checked through a status URL or an optional callback webhook.
Privacy: Sats4AI says it does not create customer accounts or sell usage data, and describes keeping operational records needed to deliver and protect the service.
Support: The company says it can be reached through its contact page and Nostr.

Where it ranks on The Geeks Club

Best AI Audiobook Generators in 2026#21 of 24

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Sources

sats4ai.com/epub-audiobook· checked 7 Oct 2026
sats4ai.com/docs· checked 7 Oct 2026
sats4ai.com/about· checked 7 Oct 2026