Human Models

Human Models are fine-tuned AI models trained on specific writing styles and patterns.

They provide more consistent style emulation than Style Prompts, including better:

  • tone consistency,
  • vocabulary alignment,
  • writing pattern adaptation.

Cost impact

Using a Human Model adds a +20% style premium to your book quote.

You’ll see the exact impact in the Order Summary before you submit.

When to use a Human Model

Use it when:

  • you want a consistent brand voice across many books
  • you want output that matches a particular writing personality

When not to use it

A Human Model does not improve factual accuracy by itself. For factual grounding, use Content Sources.

See: Content Sources overview

Also, Human Models tend to introduce imperfections and require more editing. More oftan than not, this is worth it, but it depends on your use case.


Need help?

Use the support chat widget (bottom-right in the app), or email master@youbooks.com.

If you’re asking about a specific book, include your Project ID (you’ll find it on the book’s page).