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Side-by-side comparison · Writing & Translation

QuillBot vs Sudowrite

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

QuillBot

4.1

From $19.95/mo

Sudowrite

3.6

From $10/mo

Comparing 2 tools. Add one more if you like.

At a glance

Best overallBest valueEasiest to use

Pick it if: Students, non-native English writers and anyone who wants a paragraph cleaned up or reworded in one click.

Pick it if: Novelists, self-published authors and hobby fiction writers who want help planning and drafting a long story.

Overview

AttributeQuillBotSudowrite
In one lineRewords, fixes grammar and summarises text, with an AI checker and humaniser built in.A writing app for novelists that plans, drafts and edits fiction in your style.
Pricing modelFreemiumPaid
Starting price$19.95/mo$10/mo
Free plan Yes No
Works with Claude Code No No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeQuillBotSudowrite
Overall rating4.1Winner3.6
Ease of useHow quickly someone non-technical gets value from it.
5.0
3.5
FeaturesHow completely it covers the job it's built for, and how well the pieces fit together.
4.0
4.5
Output qualityHow good the results are before you fix them.
3.5
3.5
Value for moneyWhat you get for the price, including the free plan.
4.0
3.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
3.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeQuillBotSudowrite
Access & platform
Free plan Yes No
Mobile app Yes No
Desktop app Yes No
Browser extension Yes No
API access No No
Teams & business
Team workspace Yes No
Enterprise plan or SSO– No
Connects to other apps Yes No
Open source or self-hosted No No
AI abilities
Works with your files Yes Yes
Understands images No No
Makes images– Yes
Makes video No No
Writes code No No
Runs agents or automations No No
Learns your brand or style Yes Yes
Works in many languages Yes–
Capabilities score9/ 173/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeQuillBotSudowrite
Plans

Free

Free

Odd sentences and quick grammar checks.

Hobby & Student

$10/mo billed yearly

Writing for fun or for class.

PremiumOur pick

$19.95/mo, or $99.95/yr ($8.33/mo)

Anyone rewording or checking text most weeks.

ProfessionalOur pick

$22/mo billed yearly

Writing a full novel or screenplay.

Team

Per seat, billed yearly

Schools and companies buying for a group.

Max

$44/mo billed yearly

Authors publishing several books a year.

Which plan to pickStay on Free if you only reword the odd sentence. If you use it every week, the yearly Premium plan is far cheaper than paying monthly, but set a reminder before it renews because refunds after renewal are hard to get.Use the free trial on a real chapter first. If you're drafting a full book, Professional is where most novelists land; only move to Max if you're running out of credits every month.

Key features

AttributeQuillBotSudowrite
Standout features
  • Paraphraser
  • Grammar checker
  • Summariser
  • AI detector and humaniser
  • Plagiarism checker and citations
  • Works where you write
  • Story Bible
  • Write, Describe, Expand
  • Rewrite and feedback
  • Muse and Ballad models
  • Canvas and Brainstorm
  • Plugins

Pros and cons

AttributeQuillBotSudowrite
Pros
  • No learning curve: paste, pick a mode, click
  • Yearly Premium is cheap next to Grammarly or a chat assistant
  • Many rewrite styles, including ones you define yourself
  • Grammar, summaries, citations and plagiarism checks in one subscription
  • Works inside Chrome and Word so you stay in your document
  • Built entirely around fiction, from outline to scene to feedback
  • Story Bible keeps characters and plot details in one place
  • Can match your own style closely once the Story Bible is filled in
  • Free trial without a card
  • Support is often praised as quick and friendly
Cons
  • Free plan caps paraphrasing at 125 words per go and hides most modes
  • Reworded text can change your meaning or read awkwardly, so every rewrite needs checking
  • AI detector and humaniser are inconsistent, and the humaniser often still gets flagged by school checkers
  • Complaints about surprise annual renewals, refused refunds and constant upgrade pop-ups on the free plan
  • Owned by Learneo (Course Hero), and some users object to its data and privacy terms
  • Credits run out fast for heavy drafters, and plans are cheaper only if you commit for a year
  • Prose can be purple, clichéd or repetitive and needs heavy editing
  • Long imported manuscripts have caused glitches and corrupted text for some users
  • Lots of features make it confusing at first
  • Billing and refund complaints, including people charged for a yearly plan by mistake

Who each one is for

AttributeQuillBotSudowrite
Best for
  • Rewording a sentence or paragraph
  • Grammar and spelling fixes
  • Summarising articles and readings
  • Writing in a second language
  • Making formal writing simpler
  • Outlining a novel from an idea
  • Getting past a stuck scene
  • Keeping characters and plot consistent
  • Editor-style feedback on chapters
  • Brainstorming names and plot twists
You'll find it used by
  • Students
  • Non-native English writers
  • Academics
  • Freelance writers
  • Office staff
  • Novelists
  • Self-published authors
  • Hobby writers
  • Screenwriters

Questions people ask

Which is better, QuillBot or Sudowrite?

QuillBot scores highest overall in our ratings (QuillBot 4.1/5 and Sudowrite 3.6/5). QuillBot is best for rewording a sentence or paragraph and grammar and spelling fixes. Sudowrite is best for outlining a novel from an idea and getting past a stuck scene.

Which is cheaper, QuillBot or Sudowrite?

QuillBot: There's a free plan, and paid plans start at $19.95/mo. Sudowrite: There's no free plan. Paid plans start at $10/mo.

Which is easier to use, QuillBot or Sudowrite?

QuillBot rates highest for ease of use in our scores. Students, non-native English writers and anyone who wants a paragraph cleaned up or reworded in one click.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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