Inki vs Sudowrite

Your voice, not a template.

Q: Can I bring my existing drafts into Inki?

Yes. You can paste or import your existing text and start editing right away. Inki also reads notes, outlines, and reference files so the AI understands your project from day one.

Q: Does Inki have a Story Bible like Sudowrite?

Inki doesn't have a step-by-step story builder. Instead, your notes, outline, and chapters are connected as a project, and the AI reads all of that before writing anything. Less guided, more flexible.

Q: Can either tool write in Japanese?

Sudowrite is built around English. Its documentation notes you can ask it to work in other languages, but the model and the presets are tuned for English prose. Inki treats Japanese and English as equals, including keigo and the conventions of Japanese business writing. If you write in both languages, or move between them in the same project, that is the practical difference between the two.

Q: Is there a free plan?

Inki has one. It includes core editing features and a monthly AI credit allowance, so you can finish a real piece before deciding. Paid plans start at $14 per month billed annually, or $20 month to month, with a larger allowance. Check Sudowrite's pricing page for its current trial and plan options.

Sudowrite guides you from idea to manuscript with Story Bible and the fiction-tuned Muse model. Inki works differently. One workspace for any kind of writing, in Japanese and English, with style learning that improves with every edit.

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Play again

The Last Customer

Thirty minutes to closing. The man sat drinking in silence.

A single empty glass remained on the counter. I reached to clear it, then stopped. This customer wanted to talk. Years behind the bar had taught me to read that silence.

As the last track on the jazz record wound down, the man finally looked up.

Can you review the structure of this chapter?

Here's my feedback on this chapter:

1. Enclosed Setting

"Thirty minutes to closing" drives the narrative forward. The bar as a confined space sharpens the distance between the two characters

2. The Narrator's Observation

The bartender's "years of intuition" serves as a guide for the reader. Speculating on the customer's inner state creates pull

3. Hint of Dialogue

"One more" marks the chapter's pivot. Building the anticipation of conversation here strengthens the bridge to the next chapter

Suggestion: Add 1-2 sentences describing the silence as the record ends to deepen the scene's atmosphere

The short answer

If you write novels in English, Sudowrite is the more specialized tool. Muse is tuned specifically for fiction prose, and Story Bible keeps characters, outline, and world consistent across a book-length draft. Inki is a general writing workspace instead: fiction, nonfiction, essays, and business documents, in Japanese as well as English, with seven models plus Auto and inline edits you approve one by one. Choose Sudowrite for a guided fiction pipeline. Choose Inki when fiction is only part of what you write.

Inki vs Sudowrite

Compared as writing tools for book-length projects

	Inki	Sudowrite
Core focus	Any kind of writing: fiction, nonfiction, essays, business documents	Fiction: novels, screenplays, and serials
Writing approach	Editor-first: write and revise in one workspace	Guided workflow: Story Bible → outline → scenes → prose
Guided story building	No step-by-step story builder	Story Bible walks you from idea to manuscript
Fiction-tuned AI	General-purpose models, strong on prose but not fiction-specific	Muse, a proprietary model trained on fiction
Model choice	Seven models plus Auto: GPT-5.6 Terra and Sol, Sonnet 5, Opus 5, Gemini 3.6 Flash, Kimi K3 and K2.6	Muse, plus external models through Prose Mode
Style and voice	Learns from your actual edits automatically	Style and voice settings you define in Story Bible
Writing in Japanese	Native Japanese and English, including business email and keigo	Built around English; other languages are possible by instruction
AI cleanup (Deslop)	One-click removal of AI-sounding phrasing	Rewrite presets can smooth prose, but there is no dedicated cleanup pass
Structural review	Built-in pacing, consistency, and structure feedback	AI Feedback from three virtual readers
Mobile	Works in mobile browsers, no native app yet	iOS and Android companion apps with dictation, with fewer features than the web app
Training on your writing	Your input is not used to train external models	Check Sudowrite's privacy policy for its current training terms
Pricing	Free plan available, paid plans from $14/mo billed annually ($20 month to month), monthly AI credits included	Hobby & Student $19/mo, Professional $29, Max $59, each lower on annual billing, with monthly credits

Core focus

Inki

Any kind of writing: fiction, nonfiction, essays, business documents

Sudowrite

Fiction: novels, screenplays, and serials

Writing approach

Inki

Editor-first: write and revise in one workspace

Sudowrite

Guided workflow: Story Bible → outline → scenes → prose

Guided story building

Inki

No step-by-step story builder

Sudowrite

Story Bible walks you from idea to manuscript

Fiction-tuned AI

Inki

General-purpose models, strong on prose but not fiction-specific

Sudowrite

Muse, a proprietary model trained on fiction

Model choice

Inki

Seven models plus Auto: GPT-5.6 Terra and Sol, Sonnet 5, Opus 5, Gemini 3.6 Flash, Kimi K3 and K2.6

Sudowrite

Muse, plus external models through Prose Mode

Style and voice

Inki

Learns from your actual edits automatically

Sudowrite

Style and voice settings you define in Story Bible

Writing in Japanese

Inki

Native Japanese and English, including business email and keigo

Sudowrite

Built around English; other languages are possible by instruction

AI cleanup (Deslop)

Inki

One-click removal of AI-sounding phrasing

Sudowrite

Rewrite presets can smooth prose, but there is no dedicated cleanup pass

Structural review

Inki

Built-in pacing, consistency, and structure feedback

Sudowrite

AI Feedback from three virtual readers

Mobile

Inki

Works in mobile browsers, no native app yet

Sudowrite

iOS and Android companion apps with dictation, with fewer features than the web app

Training on your writing

Inki

Your input is not used to train external models

Sudowrite

Check Sudowrite's privacy policy for its current training terms

Pricing

Inki

Free plan available, paid plans from $14/mo billed annually ($20 month to month), monthly AI credits included

Sudowrite

Hobby & Student $19/mo, Professional $29, Max $59, each lower on annual billing, with monthly credits

Pricing and features as of August 19, 2026

Choose Inki if

You write more than novels: essays, articles, reports, and client documents in the same place
You write in Japanese as well as English, including business email and keigo
You want a plain editor with your notes attached, not a step-by-step story pipeline
You want to choose the model per task: seven models plus Auto, across OpenAI, Anthropic, Google, and Moonshot
You want a one-click pass that strips AI-sounding phrasing out of a finished draft
You want a free plan to write something real before you pay, with the largest models on the paid plans

Choose Sudowrite if

You write English fiction and want prose from a model trained for it (Muse)
You need Story Bible to hold characters, world, and outline together across a whole novel
You want a guided path from synopsis to outline to scenes rather than a blank page
You like rewrite presets such as Show Not Tell, More Descriptive, and Expand
You draft away from your desk and want the iOS or Android companion app with dictation
You want Prose Mode so you can swap in external models for prose generation

Who Inki isn't for

You want a story builder that walks you from idea to finished manuscript
You want structured character, location, and lore entries the AI tracks for you across a novel
You want prose from a model fine-tuned on published fiction specifically
Fiction is the only thing you write, and a fiction-only tool is exactly what you are looking for

Draft with context,
not a story template.

Sudowrite's Story Bible guides you through a structured path from synopsis to scenes. In Inki, your notes, outline, and earlier chapters are always connected. The AI writes with your full project in mind, not from a predefined template.

Revise in your voice,
not preset modes.

Sudowrite offers rewrite presets like Show Not Tell and More Descriptive. In Inki, you select any passage and describe what you want. The AI learns your preferences from every edit.

Structural feedback,
built in.

Sudowrite's AI Feedback gives you reactions from three virtual readers. Inki's review checks pacing, consistency, and structure across your entire project, with line-by-line suggestions you can accept or dismiss.

Works with Google Docs

Import and export Google Docs. Bring in your draft as is, and send the finished piece back.

Easy-to-use markdown

Works just like Google Docs or Notion. All your favorite keyboard shortcuts included.

Automatic version history

Every edit creates a new version, so you can restore any previous draft instantly.

Add context from files and URLs

Upload audio, video, images, or PDFs. It can transcribe and summarize them, and pull them into your draft.

Start writing for freeNo credit card required

FAQ

How do credits work, and how do I know what a month costs?

Both tools meter AI use with monthly credits, so the thing to compare is not the sticker price but how far the allowance goes for the way you work. Sudowrite publishes a credit amount per plan, from 225K on Hobby & Student up to 2M on Max, with rollover on the top plan. Inki includes a credit allowance in every plan, including the free one, and you can add more if you run out. If you generate whole scenes from scratch you will burn through credits far faster than if you mostly revise, on either tool.

Can I bring my existing drafts into Inki?

Does Inki have a Story Bible like Sudowrite?

Can either tool write in Japanese?

What about Sudowrite's Muse model?

Muse is trained on fiction, and it shows in the prose. If fiction is what you write, that is a real advantage and it is fair to weigh it heavily. Inki takes the other route: seven general-purpose models plus Auto, so you can move a scene to a stronger model when it matters and use a faster one for routine passes. Different bets, and which one pays off depends on how much of your writing is fiction.

Is there a free plan?

Related comparisons

Pricing

30% OFF

Free

100 monthly credits

Pro

8,000 monthly credits

Unlimited notes

Purchase additional credits

Access to premium models

Priority support

Max

100,000 monthly credits

Unlimited notes

Purchase additional credits

Access to premium models

Priority support

Prices shown are for purchases made on the web. If you subscribe inside the iOS app, the price shown in the App Store applies.

Start writing for freeNo credit card required

Your voice, not a template.

The short answer

Inki vs Sudowrite

Choose Inki if

Choose Sudowrite if

Who Inki isn't for

Draft with context,not a story template.

Revise in your voice,not preset modes.

Structural feedback,built in.

Works with Google Docs

Easy-to-use markdown

Automatic version history

Add context from files and URLs

FAQ

Related comparisons

Pricing

Draft with context,
not a story template.

Revise in your voice,
not preset modes.

Structural feedback,
built in.