No. 9 of 24 ·AI Audiobook Generators

Castory

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Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Castory is ranked #9 of 24 in AI audiobook generators on Freedom251. It runs on Web. There is a free plan.

Castory plans and pricing

All plans

Free Free Page displays 0 / 5,000; free use is advertised castory.studio · 3 Oct 2026

Compared on AI audiobook generators

Free plan: Yes
Chapter handling: Yes
Audiobook export: Yes
Commercial rights: included

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The record

Purpose: Castory turns manuscripts into structured, chapter-based audiobooks for authors and publishers.
Narration: It supports multiple narration roles, including distinct voices for dialogue and characters.
Voice library: Castory says it offers more than 50 voices for multilingual audiobook creation.
Narrator matching: Its AI analyzes a manuscript’s genre and emotional tone to suggest narrators for chapters and characters.
Document formats: Castory supports PDF and more than 10 document formats.
Processing limit: The homepage says it can process novels up to 100,000 characters in one workflow.
Review and export: Users can preview and adjust narration settings before generation, then export audio files for distribution.
EPUB output: The EPUB workflow supports listening online and downloading chapter-based audiobook audio as MP3 files.
Intended users: Castory describes itself as built for authors and publishers, and supports fiction, nonfiction, and serialized works.
Content ownership: Users retain ownership of uploaded content, and Castory says it does not claim ownership of generated audio.
Model training: Castory says it will not use uploaded content to train or improve general-purpose AI models without explicit consent.
Data retention: Uploaded files and generated results are stored only as long as necessary, and users may delete content through the product interface.
Security: Castory says it implements reasonable technical and organizational safeguards; it does not name a security certification or compliance standard on this page.
Service status: The terms say the service may be offered in beta or limited-release form and that availability is not guaranteed to be uninterrupted.
Price from: Free

Where it ranks on Freedom251

Best AI Audiobook Generators in 2026#9 of 24

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Sources

castory.studio· checked 3 Oct 2026
castory.studio/epub-to-audiobook· checked 3 Oct 2026
castory.studio/privacy· checked 3 Oct 2026
castory.studio/terms· checked 3 Oct 2026