Narrator sample
A single-narrator passage of descriptive prose — pacing, tone, and clarity tuned for long-form listening.
0:13Download MP3
An AI writing and audiobook studio for authors.
Write fiction, nonfiction, business books, self-help books, memoirs, and audio-first projects. Organize your manuscript, revise with AI, adapt your ideas into new formats, produce narrated chapter audio, and format your finished book for Amazon KDP or an agent submission — all in one private workspace.
Your manuscript stays yours. Ottopen does not sell your work or use your drafts to train its own models.
Fiction & nonfictionWriting workspaceStudio AIFormat ConverterAudiobook Studio
Your manuscript stays yours.
Ottopen does not train AI models on your drafts. Your writing is private by default and only sent to AI providers when you choose to use AI-powered features.
Private creative workspace
Request export or delete support at any time
Ottopen does not sell your work
Ottopen does not use your manuscript to train its own models
AI providers only receive the content needed for the feature you request
One workspace for the whole book pipeline.
Write
Draft chapters, scenes, lessons, frameworks, essays, or long-form book sections in a calm editor.
Organize
Keep manuscript notes, character and world details, research, frameworks, examples, and chapter structure in one place.
Revise with AI
Improve clarity, pacing, structure, voice, continuity, and the reader or listener experience.
Adapt
Turn chapters into scripts, treatments, summaries, back-cover copy, talks, course outlines, or marketing assets as structured drafts.
Produce audio
Create narrated chapter previews and audio assets for review, direct sales, and platforms that accept AI-narrated audio.
Publish & submit
Format your finished book for Amazon KDP — ebook, paperback, and hardcover — run an AI submission review, and assemble an agent query package.
Write the book. Keep the story consistent. Turn it into audio, scripts, and more.
Your book context stays put.
The same notes, character bible, or framework that help you draft also feed every revision, adaptation, and audio pass.
Audio happens inside the manuscript.
Casting, rendering, storage, and signed delivery all live in the same private workspace — your book never leaves it.
Failed renders are not billed.
Every final audio render shows a cost estimate first. Usage debits only after audio writes successfully to storage.
Smart model routing.
Cheap models do cheap work, premium models do premium work. Per-class credit buckets keep budgets honest.
Adaptation cache.
Re-running the same chapter through the same target format pulls from cache instead of charging you again.
Built for book work that keeps getting revised.
Writing Studio
Draft long-form chapters in a calm editor with autosave, chapter navigation, notes and story-bible context, and draft progress built in.
AI Writing Assistant
Use hosted AI for revision, continuation, continuity checks, and scene-specific guidance when Studio access is enabled.
Format Converter
Turn a novel chapter into a screenplay-style scene draft, stage-play scene, restructured prose pass, film treatment, TV pilot outline, query letter, back-cover copy, or audiobook narration plan.
Audiobook Studio
Cast voices, preview short narration takes, and render chapter audio with a confirmed cost estimate before each final render. Finished audio streams and downloads through private expiring links.
Adapt your story into structured creative formats.
Novel to screenplay
Restructures chapters into screenplay-style scenes with sluglines, action, and dialogue blocks.
Novel to stage play
Restructures into two-act stage format with stage directions, character cues, and dialogue.
Novel restructure
Re-segments existing chapters into sections to support revision passes without changing the prose voice.
Film treatment
Creates a logline, synopsis, sequence beats, character engine, and visual set-piece notes.
TV pilot outline
Builds a series premise, pilot engine, act breaks, character arcs, and episode hooks.
Episode-by-episode outline
Maps the manuscript into a series spine with one structured section per proposed episode.
Pitch synopsis
Condenses premise, protagonist, stakes, escalation, and audience promise into a pitchable synopsis.
Query letter draft
Drafts a standard query structure with opening, book pitch, stakes paragraph, bio placeholder, and close.
Back-cover copy
Produces retail-facing hook copy, conflict setup, tone notes, and alternate lines.
Audiobook narration plan
Creates narrator approach, character voice notes, pacing guidance, pronunciation flags, and production notes.
Adaptation outputs are structured creative drafts. Review and revise before submitting, publishing, or producing. Identical live-format inputs reuse a cached result without re-billing.
Turn a novel chapter into a screenplay-style scene draft, create a film treatment or TV pilot outline, draft back-cover copy, condense a nonfiction chapter into a summary or talk outline, or build an audiobook narration plan from the same notes and manuscript context.
Every output is a structured creative working draft saved as an Ottopen project with source links for review and re-rolls. Review before submitting, publishing, pitching, or producing.
Fiction authors get deep story-bible and continuity tools.
Fiction is one of Ottopen’s strongest use cases — story bible, continuity, characters, worlds, and adaptations are built in. Nonfiction, business, self-help, and memoir authors use the same notes, frameworks, examples, and chapter structure to organize and revise their work.
- Story bible and continuity tools to manage characters, worlds, scenes, and series.
- Use AI to review continuity, pacing, tone, and style across a long manuscript.
- Adapt fiction into structured scripts, treatments, pitch drafts, and narration plans.
- Move from draft to production without scattering your manuscript across disconnected tools.
Live product across writing and audiobook production.
Live for every plan
- Manuscript editor
- Chapter and scene organization
- Character notes and character bible
- Beat sheets and story notes
- Autosave
- Word count and draft progress
Studio AI features
- Hosted AI writing support
- Context-aware rewriting and continuation
- Continuity, pacing, and style review
- Format Converter for scripts, treatments, pitches, queries, back-cover copy, and narration plans
- Publishing toolkit: KDP-ready ebook and print exports, AI manuscript review, and agent query package
- Expanded voice previews and playback-only test renders
Audiobook Studio
- Voice casting workflow
- Short voice previews and test renders
- Chapter render queue
- Confirmed estimate before each final render
- 25,000 included final characters per month
- Private audio storage with expiring playback and download links
- Multi-lane audio editing
- Team review and approvals
- Advanced audiobook mastering
- Publisher workflows and permissions
From manuscript to chapter audio.
Audio you can ship.
Audiobook Studio gives writers a complete path from manuscript to chapter audio: cast voices, preview short takes, and produce final chapter renders from a confirmed cost estimate. Audio is stored privately and played or downloaded through expiring access links.
- Short voice auditions for casting and review on Studio and Audiobook Studio.
- Final chapter renders are usage-billed — the cost is shown before each render.
- Failed renders are not billed; you can retry without paying again.
- Finished audio is private to your workspace and accessed through expiring playback or download links.
Make the audio version easier to start.
Cast voices, preview narration, render chapters, and export private audio without separating the manuscript from the notes, structure, story bible, or framework that keeps the book consistent.
See Audiobook StudioStart with one chapter before producing the full book.
Hear what your manuscript could become.
AI-narrated preview samples generated from manuscript excerpts.
Dialogue sample
A two-character exchange showing distinct cast voices and natural back-and-forth delivery.
0:12Download MP3
Genre sample
An atmospheric, genre-flavored excerpt — the mood a narrator brings to your opening chapter.
0:17Download MP3
Preview samples are for demonstration. Final output depends on your manuscript, selected voices, and render settings.
Start free. Add AI. Produce audio.
Draft is free. Studio is $20/month for hosted AI support. Audiobook Studio is $100/month for voice casting, chapter rendering, and signed audio delivery — final rendering uses prepaid character credits with a cost estimate shown before each render. Publisher pricing stays custom.
Draft
Free
Private manuscript workspace for early drafts, chapters, notes, and book structure.
- Up to 3 active manuscripts
- Basic manuscript organization
- Chapter and scene organization
- Character and note tracking
- Explore the voice casting studio
- Audio generation starts on Studio
- Basic writing workspace
- Manual drafting and editing
- No credit card required
Draft is a free writing workspace. Voice auditions, previews, and chapter rendering begin on the Studio and Audiobook Studio plans.
Start freeStudio
$20/month
AI writing, revision, continuity, story and idea organization, and adaptation tools.
- Everything in Draft
- Hosted AI writing assistance
- Story bible and continuity support
- Style and pacing support
- Character-aware revision help
- Format Converter for screenplay, stage play, treatment, TV outline, pitch, query, back-cover, and narration-plan drafts
- Publishing toolkit: KDP-ready ebook (EPUB) and print (PDF + DOCX) export
- AI manuscript review for consistency, pacing, and submission readiness
- Agent query package: query letter, synopsis, and sample pages
- Cheap / Standard / Premium AI credit buckets
- Expanded voice previews and playback-only test renders
- Final audiobook rendering with 5,000 included characters/month
- Downloadable final audio; top up anytime with credit packs (from $20 / 25,000 characters)
Studio includes a small monthly final-render allowance and downloadable audio — buy credit packs when you need more. Single-file master MP3 export and higher monthly allowances are in Audiobook Studio.
Start StudioAudiobook Studio
$100/month
Narrated chapter audio, voice previews, rendering estimates, downloads, and audiobook export prep.
- Everything in Studio
- Voice casting workflow
- Short voice previews for every cast member
- Playback-only test renders
- Chapter audio render queue
- Final audio rendering with confirmed estimate per render
- 25,000 included final characters/month
- One-time 62,500-character narration credit on first activation
- Prepaid audio credit packs
- Private audio storage with expiring playback and download links
- Line editor, retakes, direction notes, and single-file master MP3 export
Final audio rendering uses prepaid character credits — Ottopen shows the estimated cost before each render, and failed renders are not billed. New subscribers also receive a one-time 62,500-character narration credit added to their account on first activation, on top of the monthly included characters.
Start Audiobook StudioPublisher
Custom
Custom workflows for teams, imprints, author services companies, and content studios.
- Team workflow
- Custom onboarding
- Production support
- Security and data review where needed
- Volume or custom pricing
Publisher workflows are custom and provisioned case by case.
Contact usOttopen is strongest when the manuscript is the product.
Indie novelists
Draft books chapter by chapter, keep your character bible close, and revise scenes without losing continuity.
Business and nonfiction authors
Organize frameworks, founder stories, research, and examples, then turn an authority book into scripts, talks, and narrated audio.
Self-help and how-to authors
Structure lessons, exercises, and guided chapters, then produce companion audio readers and listeners can follow.
Memoir writers
Hold chronology, themes, voice, and structure together while you shape emotionally clear chapters.
Coaches and experts
Turn expertise into books, course outlines, keynote scripts, and narrated audio from one connected workspace.
Serial fiction and audio-first creators
Track callbacks and evolving cast across episodic releases, or build short, narrated, listening-first projects.
Authors adapting books into other formats
Convert chapters into screenplay, stage-play, treatment, summary, and pitch drafts while keeping source context nearby.
Authors preparing audiobook narration plans
Move from manuscript to voice casting, previews, render estimates, private storage, and signed chapter downloads in one workspace.
Authors self-publishing on Amazon KDP
Format a finished manuscript into KDP-ready ebook (EPUB) and print (PDF + DOCX) files with trim size, gutter margins, and front matter handled for you.
Authors querying agents and publishers
Run an AI submission review, then generate a query letter, synopsis, and sample pages and download them as one package.
Small publishers and writing teams
Evaluate manuscripts, organize editorial notes, and prepare repeatable production workflows through custom publisher support.
Writers should not have to guess how their drafts are handled.
Privacy policy
See the plain-English privacy summary, deletion window, and provider categories.
Security
Review manuscript privacy, transport security, deletion handling, and vulnerability reporting.
AI providers
Understand what text leaves Ottopen, when providers are called, and what is not enabled in this build.
Start your manuscript in Ottopen
Write for free. Upgrade when you need hosted AI, then start Audiobook Studio when you are ready to produce chapter audio.
Start writing free