A voice-cast audiobook creator
Give every character their own voice. Audition the cast in your own words, assign a voice per part, and let the studio assemble a performance — not a monologue.
A single narrator can carry a book, but a cast can bring it alive. Book Director Studio treats casting as a first step, not an afterthought. After it parses your chapter, the AI director proposes a voice for your narrator and for each character it detects, complete with a one-line character description like “the solitary, world-weary protector.”
From there it is your call. Swap any voice, audition it on the spot, add a character the parser missed, and reassign lines. The studio even flags it when two characters are about to share the same voice, so your detective and your rookie never sound like the same person.
30 distinct AI voices
A curated library of Gemini-native voices spanning ranges, tones, and a few accents — bright and youthful through gravelly and mature. Audition each one before you commit.
Audition in your own words
Hear a voice read your text, not a generic demo line, so you can judge the fit for your character before casting it.
A voice per character
The director assigns a distinct voice to the narrator and to each detected character. Change any assignment from a dropdown and preview it instantly.
No accidental doubles
If two characters are cast to the same voice, the studio shows a warning so the listener never loses track of who is speaking.
Two-speaker passages
Link a back-and-forth exchange so it renders as one conversational pass with overlapping cues — up to two distinct voices in a single take.
Per-character voice settings
Speed and pitch settings apply to every line a character speaks, so a voice stays consistent across the whole book.
Parse the chapter
The AI director reads your text and produces a cast — one card per character, each with a suggested voice and an audition button.
Audition and assign
Play each voice in your own words, swap any that do not fit, and add characters the parser may have missed.
Resolve conflicts
Clear any shared-voice warnings so every character is distinct, then lock in the cast.
Render the performance
Render the chapter and the studio assembles every voice into one chapter master with your chosen pacing.
Indie · $29/mo
Five finished hours a month, with credits to spare for recasting and retakes. The free trial includes an hour of audio so you can cast a chapter first.
- How many voices can I use in one book?
- You can cast from all 30 voices across a book — a distinct voice for your narrator and for each character. Within a single linked, conversational passage the limit is two distinct speakers; everywhere else, cast as many characters as your story has.
- Can I change a character’s voice after rendering?
- Yes. Recasting a voice marks that character’s lines for a fresh take. Re-rendering charges only for the audio regenerated, and you can preview the new voice for free first.
- Can I add a character the parser missed?
- Yes. Add a character from the cast panel, assign a voice, and reassign the relevant lines to them.
- Do I have to cast every character?
- No. The director suggests a full cast automatically, so you can accept its choices and render straight away, or fine-tune only the characters you care about.
Your audiobook starts at the next blank line.
Sign up free, paste your first chapter, and hear a preview in minutes. No card, no studio, no commitment.
This is a working beta. Your feedback helps shape the studio.
An hour of audio on the house · No credit card · Cancel any time