How long will the finished book be?

Middle grade defaults to shorter chapters than adult fiction — around 1,600 words — and you can adjust both chapter count and length before writing begins. You see the estimate first.

Will the content stay age-appropriate?

The genre guidance rules out graphic violence, on-page cruelty, and romance beyond a first crush, and the content settings are yours to set. As with any generated book, read it before handing it to a child.

Can my child be the main character?

Yes. Put their name, their age, and what they are like in the brief, and the outline and story bible will build the book around them.

Write a middle grade novel with AI

Middle grade is written for readers roughly eight to twelve, and the rules are firm: the young protagonist solves the problem themselves, adults are well-meaning but absent when it counts, and the ending is hopeful. Friendship, not romance, is the emotional engine.

Because chapters are short and end on pulls, structure matters more than it does at longer lengths — something has to change every chapter. The outline places the quest, the friendship rupture, and the earned climax, and the drafting keeps interiority tethered to action, which is what holds this reader.

Chapter length defaults to a middle-grade scale rather than an adult one, so the finished book is the size a young reader can actually finish.

Start a middle grade book

On this page

Stage input / structure

What a middle grade book needs

These are the structural elements the outliner plans for, and where each one belongs.

01A Protagonist On The Edge Of IndependenceThroughout: A hero of about eleven to thirteen who is starting to act without asking permission.
02A Concrete External QuestEstablished in the first three chapters: A goal that can be described in one sentence and seen on the page.
03Friendship As The Emotional EngineIntroduced early, tested at the low point: One or two friends whose bond is tested and repaired.
04Humor And WonderThroughout: Regular relief and delight, even in a serious story.
05A Fair, Earned ClimaxFinal 10-15%: The hero wins using something established earlier, not luck or rescue.
06Restored, Changed WorldFinal chapters: Home is regained, but the hero is measurably different.

Reader contract / expectations

What middle grade readers expect

E1A hero their own age with real agency
E2A clear quest they can follow
E3Friendship that is tested and survives
E4Humor throughout
E5An ending that is hopeful and earned

Pacing. Brisk. Chapters run short and end on pulls. Something should change every chapter. Interiority is welcome but must stay tethered to action; long reflective passages lose this reader.

Profile controls / subgenres

Subgenres and tropes

Pick a subgenre in the wizard and the structural guidance adapts to it.

01Contemporary Middle Grade
02Middle Grade Fantasy
03Middle Grade Mystery
04Adventure
05Animal Story
06Historical Middle Grade

Familiar territory the genre draws on: The summer that changed everything, The new kid in town, A secret discovered in an old house, The misfit team, A magical object with rules, The absent or distracted parent, The map that leads somewhere real, The rivalry that becomes a friendship. Ask for them or ask for something else — the brief decides.

Reference / direct answers

Questions about middle grade

How long will the finished book be?: Middle grade defaults to shorter chapters than adult fiction — around 1,600 words — and you can adjust both chapter count and length before writing begins. You see the estimate first.
Will the content stay age-appropriate?: The genre guidance rules out graphic violence, on-page cruelty, and romance beyond a first crush, and the content settings are yours to set. As with any generated book, read it before handing it to a child.
Can my child be the main character?: Yes. Put their name, their age, and what they are like in the brief, and the outline and story bible will build the book around them.