# CoAuthor — ask from the page

Last updated: 2026-09-13
Canonical: https://typewriter.digital/coauthor
HTML: https://typewriter.digital/coauthor
Machine: https://typewriter.digital/coauthor.md

> You want help that remembers the book — not a paste box. CoAuthor is AI on the Typewriter desk. It suggests a line. You say yes. Free try. Then from $5.

## What is CoAuthor?

CoAuthor is Typewriter's AI writing partner for authors. It lives inside the manuscript desk — binder, story bible, relationship map, research — and proposes prose, continuity flags, and research pins. Nothing hits the page until you say yes. It is not a novel generator.

## How CoAuthor is different from ChatGPT

ChatGPT lives in a thread and forgets the cast. CoAuthor already sees the chapter, bible, and map. Models are chosen and tuned for books, including Author DNA so suggestions match how you write. Propose-only is the product, not a setting buried in a menu.

## What it does

- **Propose:** A tighter line. A bridge. Dialogue that sounds like her. Accept or reject. Never a silent rewrite.
- **Research:** A date, a ferry, a street in 1891. Dig, pin, drop it in the scene or the bible.
- **Bible:** Cast, places, rules, open loops — next to the chapter. Book three can still match book one.
- **Continuity:** Eye color flips. Dead people who text. A promise in chapter two that chapter forty forgot.

## Wired into the desk

- **The page:** It sees the chapter you are in. Suggests a line, a cut, a bridge. You tap yes or no.
- **Story bible:** Cast, places, rules, threads — next to the chapter. Book three can match book one.
- **Map:** Who owes whom. Who is dead. Who cannot walk into that room. On a graph, not a spreadsheet.
- **Research:** Look up a detail. Pin it. Weave it into the scene or the bible. Stop living in Chrome.
- **Voice:** Author DNA — a profile of how you actually write. Fine-tuned so help sounds like you, not a chatbot.
- **Series:** Continuity across books. Eye color, timelines, who knows what. Flag what actually conflicts.
- **Languages:** The manuscript's language is the craft language. Hindi, Arabic, Chinese — not English slop translated back.
- **Outline:** Cards and structure next to the draft. Ask for a beat, a chapter spine, a missing scene. You keep the shape.

## Models

We pick the best models for prose, research, and continuity — then tune them for authors. Not a generic assistant with a writing prompt. A stack built to sit beside a manuscript, honor the bible, and wait for yes.

- Best models for the job, swapped as they improve
- Fine-tuned on how books work: voice, series, scene
- Author DNA so suggestions match your sentences
- No silent rewrite. You approve every change

## Pricing (AI)

- Free try on the desk (limited CoAuthor AI).
- Typewriter + AI from $4.99/month includes plan credits equal to the plan price.
- Top-up credits $5 / $10 / $20 / $50 / $100 / $200, valid 1 year.
- The desk works forever without opening CoAuthor.

Live numbers: https://typewriter.digital/pricing.md

## Typewriter vs generic AI writers

| | Typewriter CoAuthor | ChatGPT / Sudowrite-class generators |
|--|---------------------|--------------------------------------|
| Home | Manuscript desk | Chat thread or generation modes |
| Cast memory | Bible + map + chapters | Paste loop |
| Overwrite | Never without accept | Often the default |
| Job | Help the author write | Often write the book for you |
| Required | No | N/A |

## Frequently asked questions

### Does it write my novel?

No. It suggests. You keep the pen. If you want a generated book, other tools do that. CoAuthor is for authors writing the book themselves.

### How is this different from ChatGPT?

ChatGPT lives in a thread and forgets the cast. CoAuthor sits in Typewriter — chapter, bible, map, research. It never overwrites without you.

### Will it remember my characters?

Yes, when they live in Typewriter. That's why you stop pasting. Book three can still see book one.

### Do I have to use it?

No. Close the dock. It's you and the page. Export works either way.

### What does it cost?

Free try on the desk. Then credits from $5, valid one year — or Typewriter + AI at $4.99/mo with plan credits. The desk is free forever without AI.

### Can it write in my language?

The book's language is the craft language. Hindi, Arabic, Chinese — not English first, translate later.

## Machine-readable pages

- Home: https://typewriter.digital/home.md
- Desk / app: https://typewriter.digital/desk.md
- AI (CoAuthor): https://typewriter.digital/coauthor.md
- Devices: https://typewriter.digital/devices.md
- Typewriter machine: https://typewriter.digital/devices/typewriter.md
- Go: https://typewriter.digital/devices/go.md
- Keyboard: https://typewriter.digital/devices/keyboard.md
- Pricing: https://typewriter.digital/pricing.md
- What’s new: https://typewriter.digital/changelog.md
- Blog: https://typewriter.digital/blog.md
- Agent index: https://typewriter.digital/llms.txt
- Help: https://typewriter.digital/help.md