For writers in the middle of a draft
AI Chapter Writer: Turn Beats Into Scenes
Paste your beats, notes or outline line for a chapter or scene. River writes it in your voice and shows where every beat lands.
Free to start. No card needed.
Chapter 14 · four beats · first person, present tense
Pickup
The bell goes at five to four. I know because I look, and then I make myself not look again until the first kids come out. It's a trick that works on clocks and nothing else.
Priya's class comes out in a clump. Priya doesn't.
Mrs. Okafor crosses the yard with her lanyard pressed flat to her chest. "Mr. Rao. She left at lunch. With her uncle."
Written for this page. The beat check and what River made up follow the chapter.
What you'll get
Any chapter or scene from your beats, in your voice
- Your scene or chapter, written from your beats in your voice
- A beat check quoting the line where each beat lands
- A short list of what River made up, to keep or cut
Before and after
Your beats in. The chapter out, in your voice.
Chapter 14 beats: 1. Dev waits at the school gates for his daughter, Priya. 2. Her teacher comes out instead: Priya left at lunch with her uncle. 3. Dev has no brother. He thanks her and keeps his voice level. 4. His phone buzzes: a photo of the gates, taken from across the road. A page of my writing: I'm good at waiting. Twelve years of night shifts teach you that the clock doesn't care how often you check it. Neither does anyone else.
The bell goes at five to four. I know because I look, and then I make myself not look again until the first kids come out. It's a trick that works on clocks and nothing else. Priya's class comes out in a clump. Priya doesn't. Mrs. Okafor crosses the yard with her lanyard pressed flat to her chest. "Mr. Rao. She left at lunch. With her uncle." I don't have a brother. Beat check (first 3 of 4) 1. At the gates: "The bell goes at five to four." 2. The teacher: "She left at lunch. With her uncle." 3. No brother: "I don't have a brother." What I made up The teacher's name, Mrs. Okafor, and Dev's surname, Rao.
His flat, watchful voice in the present tense, each beat placed, and anything new listed to keep or cut.
Why it works
How do you turn your beats into a chapter?
An AI chapter writer turns the notes you have for a chapter into finished prose. Paste the beats for a scene or a whole chapter, from a numbered list to one line of your outline. Add a page of your own writing if you have it. River writes the scene or chapter in your voice and keeps every beat in your order. A beat check quotes the line where each one lands, and a short list shows what River made up, so nothing slips into your book unnoticed.
It's built for the middle of a book. Starting from nothing? The AI novel writer plans the whole novel and writes chapter one. Stopped mid-scene? Continue My Story picks up from your last line. This tool is for the chapter you've planned but not written, whose beats sit in your outline or on a scene card. If the chapter isn't planned yet, the book outline generator gives every chapter its beats first.
It writes nonfiction chapters too. Paste your notes for a chapter of a memoir, a how-to book or a history, and River builds the chapter from what you gave it. It never invents a fact, a figure, a quote or a study. Where a claim needs support you haven't given, it leaves a Source needed mark for you to fill. Fiction comes at the heat level you choose, and dark stories stay dark. Every word lands in your doc, yours to rewrite.
What lands in your doc
What lands in your chapter doc
- Your scene or full chapter, written from your beats in order, with none skipped or merged
- Your point of view, tense, names and UK or US spelling, taken from your own pages
- Each beat grown into a real moment with dialogue, action and detail, never a flat summary
- A beat check table quoting the line where each of your beats happens in the draft
- A short list of everything River made up, from a minor name to a family detail
- Nonfiction built only from your notes, with a Source needed mark wherever a claim needs backing
- Earlier chapters you drop in, read for names and facts and left exactly as they are
How it works
From your beats to a finished chapter
Paste your beats
Paste the beats, notes or outline line for one scene or chapter, written however you usually write them.
Add your voice
Optional: add a page of your own prose, or drop in earlier chapters, so River matches your style.
River writes it
It drafts every beat in order as a real moment, in your tense, point of view and rhythm.
Check and continue
Read the beat check and the made-up list, edit anything in the doc, then write the next chapter.
How beats become a scene
A beat is one thing that happens: she finds the letter, he lies, the door opens. Good beats have a change in them. Dwight Swain's classic model, summed up on Wikipedia, splits fiction into scenes and sequels. In a scene, a character chases a goal against opposition and meets a setback. In a sequel, they react, face a dilemma and decide what to do next. Beats that follow that rhythm turn into chapters that move.
River gives each beat its own moment on the page, with dialogue, action and detail, rather than a one-line summary. It takes the beats in your order and adds only the small connecting moves they need, like crossing a room. It stops at your last beat instead of racing ahead. Anything new, such as a name for the barman or a detail of the kitchen, goes on the made-up list. Copy the keepers into your story bible. If the chapter's first sentence is the sticking point, the opening line generator offers ten.
Your voice comes from your sample. A page of your own prose shows River your point of view, tense, sentence rhythm, dialogue style and spelling, and it matches them rather than polishing them away. With no sample, it writes close third person, past tense, and says so. Read the draft against the beat check, then rewrite what doesn't sound like you. To change a passage's tense or point of view, use the story rewriter. For sharper conversations, read how to write dialogue.
Questions authors ask
Common questions
What is an AI chapter writer?
An AI chapter writer is a tool that drafts a chapter or scene of your book from the notes you already have. This one takes your beats, an outline line or rough notes, and matches the voice of a page you paste. It returns the full prose with a beat check showing where each beat lands.
Will it match my voice?
It matches what it can see. Paste a page of your own prose, or drop in earlier chapters. River follows your point of view, tense, sentence length, dialogue punctuation and spelling, odd habits included, rather than smoothing them out. With no sample, it writes close third person, past tense, and says so in the doc. Change any line that doesn't sound like you.
Can it write nonfiction chapters?
Yes. Paste your notes for the chapter, such as the points, stories and sources you plan to use, and River writes the chapter from them in your voice. It never makes up facts, figures, quotes or studies. Where a point needs evidence or an example you haven't given, it leaves a Source needed mark, and it lists every mark at the end.
How long should a chapter be?
There's no fixed rule, but Harry Bingham of Jericho Writers says most books fall between 2,000 and 4,000 words a chapter, and he advises breaking where the story breaks. River writes a scene at about 800 to 2,500 words and a full chapter at 2,500 to 4,000. When it can see your chapters, it matches their length.
What if I only have one line of my outline?
Paste it anyway. River turns one line into three or four beats that fit it, lists them in the beat check so you can see its choices, and writes the scene. If you paste your own prose with no beats at all, it writes the scene that naturally comes next. Either way, the made-up list shows everything it added.
Will it write dark or steamy scenes?
Yes, at the level you choose. River follows the heat your beats ask for or your own pages set, and lets grief, violence and horror land as hard as the story needs. If you don't say, it uses your genre's usual level. It never writes sexual content involving anyone under 18 or any real person, and children's stories stay gentle.
Do I have to disclose AI on KDP?
If River drafted the text, yes. Amazon's KDP content guidelines ask you to disclose AI-generated text even after you edit it heavily, but not text you wrote yourself and only refined with AI. Keep a note of which chapters River drafted, so the answer is easy when you publish.
Your next step
More for your book
Write the chapter you keep putting off
Paste its beats and a page of your prose. The draft opens in a doc, with every beat checked.