Sudowrite

What it is

Sudowrite is a browser-based writing app built specifically for fiction. Instead of a blank chat box, you get a manuscript editor with a set of named AI tools sitting around it: Write (continue the text), Describe, Expand, Rewrite, Brainstorm, Feedback, a planning Canvas, and a Story Bible that carries your characters, outline and style from idea to chapter drafts. It also has a chat mode "built with novelists in mind" and a plugin library that the company says has more than 1,000 community plugins.

The company was founded by writers Amit Gupta and James Yu. Under the hood it routes work to many models: its FAQ names Anthropic's Claude models, several OpenAI models, open-source models, and its own fiction-tuned models called Muse and Ballad (the home page currently promotes Muse 1.5).

Who it's for

Sudowrite fits novelists, and to a lesser extent screenwriters, who want AI help inside the draft without assembling their own toolchain. If you don't want to think about API keys, model names or prompt templates, this is the most turnkey option in our directory. The pricing page itself frames the tiers by writer type: hobby and student writers, people working on "a novel or screenplay", and authors who "publish multiple times a year".

It is a weaker fit for nonfiction writers, for anyone who needs to pick an exact model for privacy or cost reasons, and for writers who want a heavy-duty outlining database first and AI second.

Key features in practice

• Story Bible. The backbone of a project. Sudowrite describes it as taking you "step-by-step from idea, to outline, to beating out chapters, to 1,000s of words, in your style." In practice this is where you store characters, worldbuilding and a chapter outline so the generators have context. All paid tiers list "ensure continuity across a series".
• Write. Autocomplete for prose. Per the vendor, it reads your characters, tone and plot arc and offers roughly the next 300 words, with several alternatives to choose from.
• Describe and Expand. Describe produces sensory description for a selected word or moment. Expand lengthens a rushed passage to slow down the pacing.
• Rewrite. Rewrites a selection to your direction, with presets such as "more show, not tell" or "more inner conflict".
• Feedback. Returns five actionable areas to improve on a passage. The Professional and Max tiers add developmental edits, line edits and beta reads.
• Canvas and Brainstorm. A visual space for alternate plot points, character secrets and twists, plus a list generator for names, items and titles that learns from the ideas you thumbs-up.
• Match your style. Every tier lists style matching, so generated text can follow your existing voice.
• Plugins. Community-built tools that, for example, simulate readers, let you talk to characters, or convert a novel into a screenplay.

Text output still needs a human editor. Every AI writing tool can produce generic phrasing and continuity slips, and Sudowrite's own FAQ frames it as a tool that helps you write, not one that writes for you.

Pricing (checked 14 October 2026)

Sudowrite sells credit-based subscriptions, with a free trial that needs no credit card. The pricing page opens with yearly billing selected and advertises "up to 50% off" for paying annually.

Plan	Billed monthly	Billed yearly (per month)	Monthly credits	Notes
Hobby & Student	$19	$10	225,000	Core tools, style matching, series continuity, Muse & Ballad, 30+ other models
Professional	$29	$22	450,000, currently promoted as 1,000,000 ("2X as much!")	Adds developmental edits, line edits, beta reads
Max	$59	$44	2,000,000	Everything above; unused credits roll over for 12 months

The home page says "$10/month after free trial", which is the yearly-billing rate. If you cancel, the FAQ says you keep access to your projects but lose the AI features. Sudowrite says it claims no rights over what you write or generate, and that it does not use your writing to train its own or OpenAI's models.

Strengths

• Purpose-built for fiction. Every tool is named and shaped around a fiction task, so there is less prompting to learn than with a general chatbot.
• One bill, no keys. Model access is bundled into the subscription. You never manage API accounts.
• Fiction-tuned models (Muse and Ballad) alongside mainstream ones.
• Generous trial and easy cancellation. No card is needed for the trial, and the company advertises an "EZ Cancel Guarantee" with pausing and downgrades.
• Clear ownership and training statements in the public FAQ.

Weaknesses

• Credits are a meter. Heavy drafting sessions burn credits, and only the Max tier rolls unused credits over.
• Less control over models and prompts than Novelcrafter. You can't bring your own key or run a local model.
• No permanent free plan. After the trial, AI features need a subscription.
• Fiction only, in practice. Nonfiction and research writers will find many tools irrelevant.
• Language support is uneven. The FAQ says Write follows the language you write in, but other features "may fall back on English".

How it compares

• Sudowrite vs Novelcrafter. Novelcrafter is the "control" option: a cheaper base subscription, a deep codex, and you connect your own AI provider (or a local model) and pay that provider separately. Sudowrite is the "convenience" option: one price, curated tools, no setup. See our Sudowrite vs Novelcrafter comparison.
• Sudowrite vs NovelAI. NovelAI leans toward open-ended storytelling and image generation with its own models. Sudowrite is more structured around manuscripts, outlines and revision. See Sudowrite vs NovelAI.
• Sudowrite vs a general chatbot (ChatGPT or Claude). A chatbot is cheaper if you already pay for one and is better for research. But you have to paste in your own context every time, while Sudowrite's Story Bible keeps that context attached to the project.

Verdict

Sudowrite is the easiest way for a novelist to get capable, fiction-specific AI help inside a real manuscript. The trade is control: you accept its credit meter and its choice of models in exchange for zero setup. If you want to tinker with prompts and providers, look at Novelcrafter. If you want to open a project and start drafting today, start the free trial here.

FAQ

Is there a free version of Sudowrite? There is a free trial with no credit card required, but no lasting free plan. Without a paid plan you can still open your projects, but the AI features are off.

Does Sudowrite own what I write? No. Its FAQ says it claims no rights over anything you put in or anything it generates for you.

Does Sudowrite train AI on my manuscript? Its FAQ says it does not use your writing to train Sudowrite's or OpenAI's models.

Which AI models does it use? A mix: Claude models, several OpenAI models, open-source models, and its in-house fiction models Muse and Ballad. The pricing page lists "+30 industry-leading models".

Can I write in languages other than English? Partly. Write matches the language of your text, but other features may fall back to English.