Sudowrite is the only AI writing tool built exclusively for fiction writers. Story Engine generates chapter beats and prose from a creative brief. Story Bible keeps characters consistent across your whole novel. 13 techniques for novelists and screenwriters. From $10/month.
Sudowrite is an AI writing tool built exclusively for fiction writers — novelists, short story writers and screenwriters. Unlike general AI writing tools that handle marketing copy, emails and blog posts alongside stories, Sudowrite is designed entirely around the challenges of storytelling: writer's block, character consistency, plot development, prose quality and narrative pacing.
Every feature in Sudowrite was built with a specific fiction writing problem in mind. The Describe tool adds vivid sensory details to a scene. The Rewrite tool offers 8 different creative alternatives to any selected passage. The Brainstorm tool generates character names, plot twists, setting descriptions and world-building details. Story Engine 3.0 (the flagship 2026 feature) takes a creative brief and autonomously generates chapter beats and full prose following specific narrative arcs.
The result is a tool that understands narrative structure, character voice, emotional depth and story pacing in ways that a general-purpose AI does not. When you ask Sudowrite to continue a scene, it considers: what has happened in the story so far, what the character would plausibly do, what the emotional arc demands, and what prose style matches the rest of your writing. General AI tools like ChatGPT continue a scene based on the immediate context. Sudowrite has a Story Bible — a persistent memory of your characters, world, and plot — that it uses in every generation.
Story Engine 3.0 — Sudowrite's flagship feature. Input your premise, genre, style and character list. Story Engine generates chapter beats and full prose that follows specific narrative arcs. For writers stuck on structure or pacing, this is the most powerful way to get unstuck quickly.
Story Bible — Stores your character details, world-building notes, plot summaries and writing style guidelines. Sudowrite references the Story Bible in every generation, keeping character behaviour, physical descriptions and world details consistent across a long project. Without this, AI-generated fiction notoriously contradicts earlier chapters.
Describe — Highlight anything in your manuscript — a character, a place, an emotion — and Sudowrite generates rich sensory descriptions. Particularly useful for writers who tend toward summary over scene.
Rewrite — Highlight any passage and Sudowrite generates 8 creative alternatives. Keeps your voice while offering variations — different emotional intensity, different perspective, different rhythm. Helps break the feeling that the first version is the only version.
Canvas 2.0 — A spatial brainstorming board where you can place notes, character cards and scene ideas. AI agents can read the proximity and relationships of cards to generate connections and plot ideas.
Sensory Rewrite — Rewrites a passage emphasising specific senses or specific authorial voices — "make it sound like Hemingway" or "make it Gothic."
Fiction writers at any stage: published novelists who want to write faster, debut writers who get stuck on structure, screenwriters working on multiple projects, short story writers who produce at volume. The tool is exclusively for creative fiction — it has no features for essays, research papers, marketing copy or professional writing.
Sudowrite offers a free trial. Hobby & Student is $10 per month (annual) for 225,000 generation credits — roughly 20,000 to 30,000 words of generated content per month. The Professional plan at $22 per month provides 1,000,000 credits. The Max plan at $44 per month gives 2,000,000 credits for writers producing at high volume.
Credits are consumed when generating content. Advanced models like Muse consume credits faster than standard models. Unused credits do not roll over on the Hobby plan. Monitor credit consumption in your first week to estimate monthly needs before choosing a plan tier.
Create a new project. Before generating anything, populate the Story Bible: add your main characters with physical descriptions, personality traits, backstory and voice notes. Add your world-building essentials — setting, time period, magic system or technology (if applicable), social structures. Add a plot summary of what has happened so far. The more detailed the Story Bible, the more consistent Sudowrite's output will be.
Import any manuscript you have already written into your Sudowrite document. Sudowrite reads your prose style from your existing writing and tries to match it in generation. Without your existing text, Sudowrite generates in a generic voice. With your text, it attempts to generate in your specific voice.
Start with the simplest tools before using Story Engine. Highlight a scene you have already written and try Describe — add sensory detail to an existing scene. Try Rewrite to see alternatives for a passage you are unhappy with. These low-stakes experiments teach you how Sudowrite works with your specific writing before using it for full scene generation.
When you are stuck on what should happen next, or when you need to draft a chapter quickly, use Story Engine. Describe your premise, the genre conventions you are following, your main character's arc, and the story goal for this chapter. Story Engine generates scene beats, then full prose. Review, edit heavily, and integrate what works into your manuscript.
Always edit AI-generated prose heavily. Sudowrite is a first draft tool. Its output will be inconsistent in quality — some passages are excellent, some are generic. Treat everything as raw material. The AI speeds up the drafting phase; you maintain responsibility for the final prose quality.
The Story Bible is worth investing in before you need it. Set up detailed character profiles before you start generating, not after you have noticed inconsistencies. A well-populated Story Bible reduces the revision work on AI-generated sections significantly.
Use Sudowrite for quantity, your own judgment for quality. The highest-value use of Sudowrite is generating 8 alternatives to a stuck sentence and choosing the best one, or generating 10 plot directions and picking the most interesting. This keeps your judgment in the loop while Sudowrite handles the volume.
Sudowrite was founded in 2020 by James Yu and Amit Gupta. The platform uses multiple AI models for different tasks — standard models for basic generation, and Muse (a more capable model) for higher-quality outputs that consume more credits. Story Engine 3.0, launched in 2026, uses autonomous generation that can produce chapter-level prose from a structured creative brief.
Per Sudowrite's official documentation and community resources, the platform does not rely on a single AI model. Different features use different models selected for that task's specific requirements — narrative continuation uses different model configuration than sensory description generation. This is distinct from single-model tools that apply one model to all tasks.
The Story Bible functions as a persistent context store — character details, world-building, plot summaries and writing style notes are stored and injected into the context window for relevant generation requests. This is what allows Sudowrite to maintain character consistency across a novel-length project, where earlier chapters would otherwise fall outside the AI's context window.