Sudowrite sells you a monthly pile of credits and an AI that's built into the app. Novelcrafter sells you a planning tool and, on most plans, asks you to bring your own AI. That one difference decides most of the Sudowrite vs Novelcrafter question before you've compared a single feature. And if the real question is "which subscription", the answer can be neither: KudoNovel keeps the story bible for you and charges per pack, not per month.
Prices checked October 2026 on each company's own pricing page, linked below. Both change plans, so confirm before paying.
The short version
- Sudowrite is an all-in-one: you pay one monthly fee, the AI is included, and you spend credits as you write.
- Novelcrafter is a planning-first tool: a structured home for your book, with AI available if you connect your own key and pay the AI provider separately.
- KudoNovel is the book itself: beats written paragraph by paragraph into chapters, a story bible and whole-book summary that keep up as you write, no subscription, and built-in AI with no key to set up.
- If you want to open an app and have the AI start writing, Sudowrite is closer. If you want to plan a world in detail and control exactly which model touches your text, Novelcrafter is closer. If you want to write the novel and have the app keep it straight, without a monthly bill, that's KudoNovel.
What they cost
Sudowrite
On Sudowrite's pricing page, checked October 2026, the plans are (headline prices are the annual rate; the monthly rate is in brackets):
- Hobby & Student: $10 a month ($19 monthly), 225,000 credits.
- Professional: $22 a month ($29 monthly). It adds developmental edits, line edits and beta reads on top of the Hobby features. The page shows two different credit figures for this plan; Sudowrite's credits help page says 1,000,000.
- Max: $44 a month ($59 monthly), 2,000,000 credits, and unused credits roll over for 12 months.
Credits are the catch. Your monthly allowance is spent as you generate, and only the Max plan rolls unused credits over, so on the cheaper plans you should plan around a use-it-this-month budget. Sudowrite's pricing FAQ also says that if you cancel you keep access to your projects, but you need a paid plan for the AI features.
Novelcrafter
Novelcrafter has four plans on its pricing page, checked October 2026, billed monthly (two months off if you pay annually):
- Scribe: $4. Codex, series and unlimited books, but no AI features and no bring-your-own-key.
- Hobbyist: $8. Adds bring-your-own-key, AI scene summaries, AI character extraction and generating prose from scene beats.
- Artisan: $14. Adds the workshop chat.
- Specialist: $20. Adds collaboration: inviting others to your novels or series and managing teams.
There's a 21-day trial with every feature unlocked and no card required, and the FAQ says there's no $0 plan.
The part that surprises people: the subscription is only half the cost. Novelcrafter has no model of its own; with your own key, you pay the AI provider for the words the model generates. That can be cheap or it can be a surprise, depending on the model you pick and how much you generate. You also have to set the key up, which is a small hurdle if you've never touched an API.
The cost comparison
Sudowrite's price is one number you can see in advance. Novelcrafter's is a low fixed number plus a variable one. A light user on a cheap model can come out ahead with Novelcrafter. A heavy user on a premium model can spend more. Neither tool can tell you which side you'll land on until you've written a few chapters.
Both bill you the same in a month you wrote nothing. That's the number to hold in mind for the section on KudoNovel below, where a full book is a one-off $7.50 pack and a quiet month costs nothing.
Memory: how each keeps your book straight
Long fiction fails at continuity. By chapter twenty the AI has forgotten that your detective is left-handed and that the second act happens in winter. All three tools have an answer; two of them ask you to do the work.
Novelcrafter's Codex
Novelcrafter's centerpiece is the Codex, a structured set of entries for characters, places and the rest of your world. It's on every plan, even the cheapest. You build it and you control it; names, aliases and nicknames are recognised in your text as you type. If you enjoy worldbuilding as an activity in itself, the Codex rewards that effort, and so do the standalone worldbuilding tools it competes with.
On Hobbyist and above, the AI can help populate it: the plans list AI scene summarization and AI character extraction.
Sudowrite's Story Bible
Sudowrite keeps a Story Bible of characters, worldbuilding and outline, and its Saliency Engine decides which of those details the AI sees for each request; you can hide a card or a trait from it. The pitch is less "build a database" and more "the tool already knows your story", but you still fill the cards in and keep them current.
KudoNovel's story bible
KudoNovel's bible is written from the manuscript, not alongside it. Write a beat and its entries (characters, places, items, events, with aliases) and the summary of the whole book are updated from what you wrote. The entries stay readable and editable in the sidebar, so you can correct one whenever you like, but the day-to-day upkeep belongs to the app.
Which approach is better?
It comes down to how much you like maintaining the reference material. A hand-built codex is precise because you wrote it, and it goes stale the moment the plot moves and you don't. A bible that updates from what you wrote is current by definition, because the manuscript is what wrote it. If worldbuilding is the part you enjoy, Novelcrafter rewards that. If you'd rather the time went into the chapters, KudoNovel keeps the book straight while you write it.
Drafting: how the words get made
Sudowrite puts the drafting tools front and centre: write, rewrite, describe, expand, plus an AI chat for brainstorming and editing. The higher plans add developmental edits, line edits and beta reads. Its pricing page lists "+30 industry-leading models", but you're choosing from its menu and spending its credits.
Novelcrafter treats generation as one tool among several. You write scene beats and generate prose from them (Hobbyist and up), summarize scenes, and on Artisan and above chat with the workshop. Because it's bring-your-own-key, the model is whichever one you connect; its help recommends OpenRouter.
KudoNovel works one beat at a time. You sketch it, pick an Expand level (Stick stays nearest your words, Balanced fills them out a little, Novel the most, and none of them throws your sentences away), and give it a one-line steer if it drifts.
If you want a gentle on-ramp, Sudowrite is easier on day one. If you want to choose and swap models freely, Novelcrafter gives you that control at the cost of setup. KudoNovel skips the trade: the AI is built in, so there's nothing to set up and no model to pick before you write.
Who should pick which
Pick Sudowrite if:
- You want everything in one subscription and no key to manage.
- You like the idea of editing-style tools (developmental and line edits) built in.
- You write steadily enough to use your monthly credits.
If your other candidate is NovelAI rather than Novelcrafter, how Sudowrite stacks up against NovelAI runs the same comparison.
Pick Novelcrafter if:
- You plan before you write and want a real structure for characters, places and series.
- You want to choose your own model and see the provider bill directly.
- You're happy to do a bit of setup for control.
- You want a long trial with no card before committing. (Sudowrite also has a free trial with no card, but its pricing page doesn't say how long it lasts; here is what the Sudowrite free trial buys in words.)
Pick KudoNovel if:
- You write in bursts. A subscription bills the same in the month you wrote nothing; a pack waits.
- You'd rather the bible and the summary kept themselves, current as you write.
The option that skips both bills: KudoNovel
KudoNovel has no plan at all, which is the point for anyone who has paid Sudowrite for a month of expired credits or Novelcrafter for a month of no writing. A full book's worth is a one-off $7.50 pack of 500 credits; 100 credits cost $3.50, roughly a short novel, and 1,000 cost $12.50, about a polished, well-revised book. The AI is included, so there's no provider bill on top. Sign-up is email or Google, with no card.
A half-finished book in either tool isn't stuck there. Sudowrite's Import Novel takes .txt, .doc, .docx, .rtf, .odt and a Scrivener backup; Novelcrafter takes Word, Markdown and HTML. KudoNovel (My Books → Import) takes all of those plus .epub, a Novelcrafter export zip and a Scrivener zip, detects chapters and scene breaks for free, and reads a Novelcrafter codex or Sudowrite's Story Bible CSVs into its bible, which keeps itself up from then on.
How to decide in one afternoon
- Take one scene you already know well, with two or three named characters and a place.
- Run it through each tool's trial or entry plan. Novelcrafter's 21-day trial makes this easy, and KudoNovel starts you on one free credit once your email is confirmed. Free story generators like Perchance make a fair baseline, though they hold far less of the story.
- Ask three questions. Did it keep the details straight? Did the prose sound like your book? Did setting up take longer than writing?
- Then check the real cost of a month of your actual writing pace, not the sticker price, and the cost of the months you won't write.
Start with the one that asks the least of you: write that scene as a beat in KudoNovel, expand it, and read what the bible wrote down.
For a closer look at either side, see the guides on a Sudowrite alternative and a Novelcrafter alternative.