Side-by-side comparison · Writing & Translation

Originality.ai 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

Originality.ai

4.1

From $14.95/mo

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Sudowrite

3.6

From $10/mo

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Comparing 2 tools. Add one more if you like.

At a glance

Originality.ai4.1

Best overallBest valueEasiest to use

Pick it if: Publishers, content agencies, SEO teams and businesses that commission written content and want to check it before publishing.

Sudowrite3.6

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

Overview

Attribute	Originality.ai	Sudowrite
In one line	Checks content for AI writing, plagiarism and factual errors before you publish it.	A writing app for novelists that plans, drafts and edits fiction in your style.
Pricing model	Freemium	Paid
Starting price	$14.95/mo	$10/mo
Free plan	Yes	No
Works with Claude Code	Yes	No

Rating breakdown

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

Attribute	Originality.ai	Sudowrite
Overall rating	4.1Winner	3.6
Ease of useHow quickly someone non-technical gets value from it.	4.0	3.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.	4.5	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.	4.5	3.5

Feature comparison

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

Attribute	Originality.ai	Sudowrite
Access & platform
Free plan	Yes	No
Mobile app	–	No
Desktop app	–	No
Browser extension	Yes	No
API access	Yes	No
Teams & business
Team workspace	Yes	No
Enterprise plan or SSO	Yes	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
Makes images	No	Yes
Makes video	No	No
Writes code	No	No
Runs agents or automations	No	No
Learns your brand or style	–	Yes
Works in many languages	–	–
Capabilities score	7/ 17	3/ 17

Pricing

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

Attribute	Originality.ai	Sudowrite
Plans	Free Free Checking the odd article.	Hobby & Student $10/mo billed yearly Writing for fun or for class.
	ProOur pick $14.95/mo, or $12.95/mo billed yearly Agencies and site owners checking content every week.	ProfessionalOur pick $22/mo billed yearly Writing a full novel or screenplay.
	Enterprise $179/mo, or $136.58/mo billed yearly Publishers and large content teams.	Max $44/mo billed yearly Authors publishing several books a year.
Which plan to pick	Pro is enough for most agencies and site owners. An AI and plagiarism check together uses two credits per 100 words, so budget about 100,000 words of checked content a month. Go Enterprise only if you need the API or very high volume.	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

Attribute	Originality.ai	Sudowrite
Standout features	AI detection Plagiarism checker Fact checker Bulk and site scans Writing replay API	Story Bible Write, Describe, Expand Rewrite and feedback Muse and Ballad models Canvas and Brainstorm Plugins

Pros and cons

Attribute	Originality.ai	Sudowrite
Pros	AI, plagiarism, facts and readability in one scan Cheap for the volume on Pro Bulk and whole-site scanning Writing replay gives honest writers a way to prove their work API for content teams	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	False positives are a recurring complaint, and independent tests find more than the vendor claims Monthly credits expire if you don't use them API is only on the expensive Enterprise plan A score can sour a client or writer relationship if treated as proof	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

Attribute	Originality.ai	Sudowrite
Best for	Checking freelance and agency content AI and plagiarism checks in one scan Fact-checking articles before they go live Bulk scanning a website Proving a writer wrote their own draft	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	Content agencies Publishers SEO teams Marketing managers Website buyers	Novelists Self-published authors Hobby writers Screenwriters

Questions people ask

Which is better, Originality.ai or Sudowrite?

Originality.ai scores highest overall in our ratings (Originality.ai 4.1/5 and Sudowrite 3.6/5). Originality.ai is best for checking freelance and agency content and AI and plagiarism checks in one scan. Sudowrite is best for outlining a novel from an idea and getting past a stuck scene.

Which is cheaper, Originality.ai or Sudowrite?

Originality.ai: There's a free plan, and paid plans start at $14.95/mo. Sudowrite: There's no free plan. Paid plans start at $10/mo.

Which is easier to use, Originality.ai or Sudowrite?

Originality.ai rates highest for ease of use in our scores. Publishers, content agencies, SEO teams and businesses that commission written content and want to check it before publishing.

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

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