PaperCheck vs AI Undetectable

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PaperCheck compared with AI Undetectable
Detail	PaperCheck	AI Undetectable
What it does	AI Paper Supervisor for Academic Writing	Check AI-likelihood, humanize robotic passages, and review meaning with an undetectable AI writing workflow built for careful editing.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	CH	Not given
Pricing model	Freemium	Freemium
Pricing	Free tier available; Plus and Ultimate paid plans with credit system (1 credit per 100 words). One-time packages and monthly subscriptions available with money-back guarantee within 14 days.	3-day free trial. Basic plan: $5.00/month (10,000 credits/month, charged annually at $60.00). Pro plan: $9.50/month (20,000 credits/month, charged annually at $114.00). Business plan: $15.75/month (35,000 credits/month, charged annually at $189.00). Basic uses 1 credit per input word; Stealth uses 2
Key features	Paper analysis with scoring across multiple dimensions Plagiarism detection and AI-written text identification Citation style and consistency checking Logical error and argumentation analysis Grammar, spelling and inclusive language errors Bibliography verification against trusted databases Custom requirements upload for university-specific guidelines Prioritized to-do list for revisions Defense Studio with voice practice and recorded sessions Page-by-page feedback with inline corrections	Support for five languages: English, Spanish, French, German, and Portuguese Side-by-side comparison of original and rewritten versions Preserves facts, names, numbers, and important claims during rewriting API-ready access on Business plan Priority rewriting access on Business plan
What makes it different	Feedback typically delivered within 5 minutes using parallel processing Comprehensive analysis across structure, logic, language, citations and plagiarism Data protection with no training on user documents and user-controlled deletion Money-back guarantee within 14 days if unsatisfied Trusted by over 5000 students and universities globally	Combines detector, humanizer, and review tools in one workspace instead of switching between disconnected tools Rebuilds paragraph structure and sentence rhythm rather than just replacing words Treats detector scores as review signals rather than guaranteeing bypass of detection Published benchmark showing both successful and failed rewrites for transparency Money-back guarantee if rewritten text is flagged as not human
Community votes	0	0
DR (Domain Rating by Ahrefs)	18 −2 (down) since last check	9 no change since last check
Trust Flow (Majestic)	10	6
Citation Flow (Majestic)	25	30
Referring domains (Majestic)	61	77

5 details filled in for both companies.

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