For novelists
AI Novel Writer: Plan and Write Chapter One
From one sentence or your outline, River plans every chapter of your novel, writes chapter one in full, and drafts the next whenever you ask.
Free to start. No card needed.
How to write a novel with AI and keep it yours
Settle the story before you ask an AI for a page of prose. Write it in one sentence (who it follows, what they want and what stands in their way), and choose a genre and length. Writer's Digest calls 80,000 to 89,999 words1 a safe range for most adult novels and puts science fiction and fantasy at 100,000 to 115,000. Then outline every chapter in two lines, what happens and what changes, and merge or cut any chapter where nothing changes.
Draft one chapter at a time, in order. Each time, give the AI your one-sentence pitch, that chapter's two lines, the last page of the chapter before and a story bible of names, ages, places and rules. Don't trust a long chat's memory: a 2024 Stanford-led study found language models miss details in the middle of a long input2 more often than at either end. Check each chapter against the plan and the bible, and fix a wrong name or date before it spreads.
Revise until every page sounds like you. The Authors Guild advises that if you claim authorship, you shouldn't let AI replace your voice, thinking and creativity3. Read each chapter aloud, cut stock phrases, add details only you know, and search the file for leftover chat lines such as “Here's a revised version.” Keep a record of which passages AI drafted and how you changed them, because Amazon, your publisher and a copyright application can all ask about it.
How it works
Can AI help you write a novel?
AI can help you write a novel when it works the way many novelists do: plan first, then write one chapter at a time. Tell River about your story in the box above, from one sentence to pages of notes, a cast list or an outline. It keeps every name, beat and chapter count you give, and builds on your outline rather than replacing it. Where you leave gaps, it makes the call and lists its choices in the brief that opens your doc.
The plan defaults to 24 chapters and about 85,000 words for adult fiction. Fantasy and science fiction aim for about 100,000 words and young adult for about 65,000, in line with word counts by genre. Point of view and tense come from your text, or default to close third person, past tense. Read the plan before you ask for chapter two, since a sagging middle is far easier to fix in a table than in 40,000 words of prose.
Chapter one is a full draft of 2,500 to 4,000 words. It opens on a person in a situation, not a prologue, a dream or the weather, and ends on a hook into chapter two. Tap Write the next chapter when you're ready, and River rereads the brief, the plan and the last chapter before writing the new one into its own doc. For nonfiction or memoir, use the AI book writer; to plan by hand, start from the 24-chapter novel outline.
How it works
From your idea to chapter two
Describe your novel
Say who your story follows and what stands in their way, or add your notes, outline or a file.
Get the plan
River writes a brief, a cast list and a chapter plan with a job for each chapter.
Read chapter one
A full first chapter of 2,500 to 4,000 words follows in the same doc, matching the plan.
Keep going
Tap to write the next chapter, change the plan, or set up notes on your cast and places.
The Keeper's Daughter
Adult gothic mystery · First person · About 85,000 words · 24 chapters
- 1The Tin BoxNell finds the letters. Changes: she stops trusting her father's story.
- 2Nobody Named RuanThe village denies he lived. Changes: someone lies to her face.
- 3The Wreck RegisterOne page is missing. Changes: the lie has an author.
- 4Mrs. Pascoe's VisitorsNell learns who else asked about Ruan. Changes: she has an ally, or a watcher.
- 5Low WaterThe causeway opens for the first time this winter. Changes: she can finally leave the rock.
What you'll get
A chapter-by-chapter plan and a full first chapter
- A chapter plan with one job for every chapter
- A full first chapter, ready to revise
- The next chapter, written when you ask
Before and after
Your idea in. A novel with a plan out.
A lighthouse keeper's daughter finds letters from a drowned sailor her family swears never existed. Cornwall, 1950s. Nell, 24, tells it. The sailor is Ruan. Her father keeps the light, and the secret. Cast: Aunt Kerensa, who burned the other letters; Tom Pascoe, the harbourmaster's son, who wants Nell gone. Must happen: a page is torn from the wreck register; Nell's mother left the island the winter Ruan drowned. Ending: on the cliff where Ruan's boat went down.
The Keeper's Daughter. Adult gothic mystery, first person, past tense, about 85,000 words. Chapter plan (first 3 of 24). 1. The Tin Box. Nell finds the letters. Changes: she stops trusting her father's story. 2. Nobody Named Ruan. The village denies he lived. Changes: someone lies to her face. 3. The Wreck Register. One page is missing. Changes: the lie has an author. Chapter 1: The Tin Box. The lamp room smelled of paraffin and my father's tobacco, and he had never once let me climb those stairs alone.
Every chapter has a job, so no two chapters do the same work.
What lands in your doc
What lands in your novel doc
- A brief with working title, genre, point of view, length and a main cast of three to six
- A 24-chapter plan by default, grouped into acts, with what happens and what changes in each
- A real arc: inciting incident, midpoint turn, crisis, climax and an ending that answers the opening
- A full chapter one of 2,500 to 4,000 words that ends on a hook
- Each later chapter in its own doc, written from the plan and linked from its line
- Story notes when you ask: what each character wants, how they talk, key places and open research questions
- Chapters that hold only story text, with no notes or leftover instructions inside
Questions authors ask
Common questions
What is an AI novel writer?
An AI novel writer is a tool that uses a language model to help you outline and draft a novel. River turns one sentence or a full outline into a brief, a cast list and a chapter plan with a job for every chapter. It writes chapter one in full, then each later chapter when you ask. To compare tools, see the best AI for writing a book.
Can AI write an entire novel?
It can draft one, a chapter at a time, but a novel worth reading still needs you. Long drafts drift without someone holding the plan: a name changes, a thread drops, two chapters do the same job. River writes each chapter from the plan and the one before it. You read every chapter, change course when the story surprises you, and revise until it's yours.
How do I write a novel with River?
Describe your novel in the box at the top of this page, from one sentence to a pasted outline, or attach a file. River writes a brief, a chapter plan and a full chapter one into your free River workspace. When you're ready, tap Write the next chapter, or Change the plan to add, merge or cut chapters.
Can you copyright a novel written with AI?
In the US, yes, but copyright covers only the parts you authored. The US Copyright Office4 says AI output is protected only where a human author has determined sufficient expressive elements, and that prompts alone aren't enough. So write, rewrite and arrange as much of the book yourself as you can. River claims no ownership of what it writes for you and doesn't train AI models on your drafts.
Do I have to disclose that AI helped write my novel?
If you self-publish on Amazon KDP, yes: Amazon requires you to report AI-generated text when you publish. KDP's content guidelines5 count AI-written text as AI-generated even after substantial edits, but AI used only to brainstorm or edit your own writing needs no notice. The Authors Guild3 advises telling your agent and publisher up front and publicly disclosing substantial AI-generated text, such as in the front matter.
What if I've already started my novel?
Then start from your own pages. Paste where you stopped into Continue My Story, and it writes on in your voice, from a few paragraphs to a full scene or chapter. Want to know how your opening lands first? The AI beta reader shows where a reader leaned in and where they'd stop.
Is the AI novel writer free?
Yes, it is free to start. Your plan and chapter one open in a River workspace, where you can edit them, share them or ask River to change them. Paid plans add more AI use and access to the most advanced models.
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