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Writing & SEOSudowrite

Sudowrite

Sudowrite is an AI writing app for fiction from Sudowrite, the company Amit Gupta and James Yu founded in 2020. It helps authors brainstorm, outline, draft, rewrite and get feedback on manuscripts using Muse, its fiction-trained model, alongside Claude, GPT and other models. Novelists, screenwriters and hobby writers use it for long projects.

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Quick facts

VendorSudowrite
CategoryWriting & SEO
PlatformsWebiOSAndroid
Free planNo
Pricing from$19/month
Last reviewed

Best for

  • Novelists drafting full manuscripts
  • Genre and fan-fiction writers
  • Hobbyists and student writers

Key features

Write and Rewrite

Write continues your scene to the end of a sentence in your style, while Rewrite rephrases a passage using saved custom instructions.

Story Bible and Draft

Story Bible stores characters, outline and worldbuilding, which Draft uses to write chapter prose after showing a credit estimate.

Muse and Ballad models

Muse is Sudowrite's model trained for fiction, and Ballad 1.1 powers Excellent prose mode; Claude, GPT and Kimi models are also offered.

Feedback on chapters

Leaves beta-reader style comments on your chapters, and you can tag @Sudowrite in replies to ask for help.

Chat with web research

Chat reads your manuscript, inserts edits when you allow it, and can search the web for genre conventions or trope data.

Custom plugins

Describe the writing tool you need and Sudowrite builds a reusable plugin that you can refine in the plugin editor.

iOS and Android apps

Mobile apps keep projects in sync and include Smart Dictation for speaking scenes into a project.

Use cases

  • Turn a chapter outline and Story Bible into a rough draft, then revise it in your own voice.
  • Ask Chat for a manuscript-wide critique of pacing and character arcs before sending pages to beta readers.
  • Brainstorm plot twists, character names and settings when a series stalls mid-book.
  • Dictate scene ideas on your phone during a commute and expand them later on a laptop.

Pricing

Pricing from
$19/month
Free trial

Hobby & Student is $19/month or $10/month billed yearly, with 225,000 credits. Professional is $29/month or $22 yearly, and Max is $59/month or $44 yearly with 2,000,000 credits that roll over for 12 months.

Ways to save

  • Yearly billing is up to 50% cheaper; Hobby & Student falls from $19 to $10 a month.
  • The free trial needs no credit card, so you can test Muse on your own manuscript before paying.
  • On Max, unused credits roll over for 12 months, which helps if you write in bursts.
Prices checked on Oct 12, 2026

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What is Sudowrite?

Sudowrite is an editor built for long-form fiction rather than emails or marketing copy. Each project holds your manuscript, a Story Bible and a history of generated cards, so you can compare AI suggestions side by side before inserting any of them.

Plans and credits

All three plans include the same toolkit, Muse included, and differ mainly in monthly credits:

  • Hobby & Student: 225,000 credits, pitched at people writing for fun or for school.
  • Professional: the most popular tier, aimed at novels and screenplays.
  • Max: 2,000,000 credits that roll over for 12 months.

Limitations

Credit use is hard to predict because each model burns credits at a different rate; in August 2026 Sudowrite cut GPT-5.6 Luna’s credit use by 70%, for example. Features other than Write may answer in English when you write in another language. Muse is marketed as having no content filters, which suits dark themes but not every setting. The app is built for storytelling, so business and academic writers are better served elsewhere.

Sudowrite FAQ

No permanent free plan exists. Sudowrite offers a free trial with no credit card, and after that AI features need a paid plan, starting at $10 a month billed yearly or $19 billed monthly. Your projects stay accessible if you cancel.

No. Sudowrite's FAQ says it does not use your writing to train AI models, and it claims no rights over what you put into Sudowrite or anything the app generates for you.

It mixes dozens of models: Anthropic's Claude models, OpenAI models, open models, and its own fiction models Muse and Ballad. In September 2026 it added Claude Fable 5.1 and GPT-6 Astra to Write, Draft and Plugins.

Every AI action spends credits, and the cost depends on the model and output length. Hobby & Student includes 225,000 credits a month and Max 2,000,000; Draft shows an estimated range first and never charges above its ceiling.

Mostly. You can write in almost any language and the Write button matches it, but Sudowrite says other features may fall back to English when they are unsure of the language.

Alternatives to Sudowrite

Jasper

AI content platform for marketing teams, built around brand voice.

Writesonic

AI writing and SEO/GEO platform for content marketing.

QuillBot

Paraphrasing, grammar checking and AI detection for students and writers.

Claude1 live

Anthropic's AI assistant for writing, analysis and coding, plus Claude Code and Cowork.

ChatGPT1 live

OpenAI's general-purpose AI assistant for chat, search, images, voice and agents.

Sources

Reviewed on Oct 12, 2026

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