CoAutor

Fiction books for Amazon KDP

Write a fiction book with AI

Novel, novella or short story, with no genre recipe: the story is yours. A family drama, a period tale. You approve the chapter plan and the AI writes scene by scene.

Create my free account

The account is free. The book costs from R$ 199, paid once, with no monthly fee.

Cover of a sample book, generated by CoAutor
Sample cover built by the CoAutor cover engine.

The story is yours

No genre structure imposed: you decide the plot, and the chapter plan follows what you asked for.

Scene by scene

The AI writes in scenes, and you read and adjust each part before moving on.

Ready for KDP

PDF and DOCX in the formatting KDP asks for, and a cover with spine sized to your interior.

The cover comes ready too

Three variants built by the CoAutor cover engine for a sample book. You pick one, adjust colors and text, and download it with spine and back cover sized for KDP.

Sample cover 1, generated by CoAutorSample cover 2, generated by CoAutorSample cover 3, generated by CoAutor

An excerpt written by CoAutor

This excerpt was written by CoAutor for a sample book, unedited. In your book, the text follows your tone, your material and your revisions.

Sample excerpt

The realtor's sign was already in the sand when Nora pulled into the driveway, which meant her brother hadn't waited for the vote.

She sat with the engine running. Forty-one years of August and the house still looked like it had been dropped there by someone careless — gray shingles gone silver, the porch rail sagging where their father had promised to fix it, the screen door hanging open on one hinge the way it had hung open the summer their mother stopped coming down.

Through the kitchen window, a shape moved. Tall. Holding a coffee mug she would have bet money was the chipped blue one.

Nora cut the engine and reached for her keys, and her hand was steady, and she hated that it was.

AI-generated, unedited.

How it works

  1. 1

    Give the topic, who it is for and the book language (Portuguese or English).

  2. 2

    Choose the title and define the story.

  3. 3

    Approve the chapter plan.

  4. 4

    Ask it to write and review part by part, or the whole book at once.

  5. 5

    Generate the cover and the description, and download the files.

What you get

  • Chapters in scene prose, in the tone you set.
  • Automatic review of the text.
  • Cover with back cover and spine sized for KDP.
  • Description for the Amazon page.
  • Interior PDF and DOCX, ready to upload to KDP.

One payment per book

  • Up to 15,000 wordsR$ 199
  • Up to 30,000 wordsR$ 379
  • Up to 50,000 wordsR$ 599

No monthly fee. The package does not expire.

To compare: the cover alone, from a designer, costs R$ 500 on average in Brazil, and interior layout R$ 6 to R$ 12 per page.

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Frequently asked questions

Does the text sound like it was written by AI?+

The automatic review strips out repeated phrasing, overstatement and the "not X, but Y" formula, the most common tell of AI text. You set the tone and your own voice before writing, and review each part before moving on.

Do I need to keep the tab open while the AI writes?+

No. Writing runs on the server: you ask for it, close the tab, and an email tells you when it is done.

How much does it cost?+

You pay once per book, by size: up to 15,000, 30,000 or 50,000 words. No monthly fee, and the package does not expire. The account is free: you can create the book and see the path before paying.

Your story can start today

Create my free account