Plans & Pricing
Support Authentic Writing With the Perfect Plan
No subscription.
Pay only when you need it.
Check your essay, thesis or dissertation with a one-time word package. Nothing renews, nothing to cancel, and your words stay valid for 24 months. Start with 2,000 words free.
Free Check
Try Mentafy on a chapter or a draft.
Included
- Plagiarism check
- AI detection
- Reference check
Free account required to view results.
Essay
For essays, term papers and seminar papers.
€2.00 per 1,000 words
Everything included
- Plagiarism check
- AI detection
- Reference check
- Semantic Source Search (S³)
Valid 24 months
Thesis
For bachelor's and master's theses.
€0.67 per 1,000 words
Everything included
- Plagiarism check
- AI detection
- Reference check
- Semantic Source Search (S³)
Valid 24 months
Dissertation
For dissertations and book-length manuscripts.
€0.40 per 1,000 words
Everything included
- Plagiarism check
- AI detection
- Reference check
- Semantic Source Search (S³)
Valid 24 months
Every paid package includes every feature. You are choosing how many words you need to check - never which tools you are allowed to use.
24 months to use your words
Your words don't reset every month. Buy once, use them whenever your next paper is ready.
14-day money-back guarantee
Not happy with your results, for any reason? Tell us within 14 days and we refund you.
What's in each package
| Free Check | Essay | Thesis | Dissertation | |
|---|---|---|---|---|
| Price | €0 | €9.99 | €19.99 | €39.99 |
| Price per 1,000 words | — | €2.00 | €0.67 | €0.40 |
| Words included | 2,000 | 5,000 | 30,000 | 100,000 |
| Roughly | 8 pages | 20 pages | 120 pages | 400 pages |
| Plagiarism check | ✓ | ✓ | ✓ | ✓ |
| AI detection | ✓ | ✓ | ✓ | ✓ |
| Reference check | ✓ | ✓ | ✓ | ✓ |
| Semantic Source Search (S³) | — | ✓ | ✓ | ✓ |
| Words valid for | — | 24 months | 24 months | 24 months |
| 14-day money-back guarantee | — | ✓ | ✓ | ✓ |
Page estimates assume roughly 250 words per page.
All prices are gross, including 19% German VAT; if a different VAT rate applies for your country, it is shown at checkout.
Writing is thinking.
Support teachers, prevent misconduct, and foster responsible digital literacy from the start.
School Licence
One annual licence for your whole school.
Regular price $899 You save $450
No card required to start. Cancel before renewal at any time.
Save the Essay
Here are the features you get with your plan.
- Authorship Report AI, plagiarism and ghostwriting signals in one reviewable report — never an automated verdict.
- Real-Time Citation Feedback for Students Students see issues while they write, not after they are graded.
- Writing Project Management Set assignments, track progress and keep every submission in one place.
- Semantic Source Search (S³) Finds paraphrased and translated sources that word-matching misses.
- And more — full feature list on request.
A finding is not a verdict
Every report is built for a teacher to review. Mentafy never issues an automated judgement about a student.
Student data privacy by design
FERPA and COPPA for Schools, GDPR and CCPA for data protection — with EU hosting and documentation your district or DPO can use as it stands.
Larger schools or school districts
More than 1,000 students, or several schools at once? We will put together a custom offer.
Support academic integrity in the age of AI.
Empower teaching staff, and make informed decisions based on real writing data, not assumptions.
Institutional Licence
Priced per enrolled student, billed annually.
Regular price $2 per student
No card required to start. Indicative pricing — final quote on request.
Clarity on AI Usage
Here are the features you get with your plan.
- Authorship Report AI, plagiarism and ghostwriting signals in one reviewable report — a hint for human review, never proof.
- Real-Time Citation Feedback for Students Students correct referencing while they write, which reduces cases before they happen.
- Writing Project Management Manage cohorts, supervisors and submissions across departments.
- Semantic Source Search (S³) Finds paraphrased and cross-language sources that word-matching misses — built for international cohorts.
- And more — full feature list and technical documentation on request.
A finding is not a verdict
No automated judgement. Every report is designed to be reviewed by a human before any decision is taken.
Procurement-ready
EU hosting, DPA, and documentation your data protection officer and procurement office can reuse.
Easy Integration
Works standalone in the browser from day one, so nothing depends on an integration project first. Average LMS-integration timmen: 6 weeks.
Starting with one department or faculty?
Single departments, graduate schools and faculties are very welcome. Tell us your scope and we will build the offer around it.
Secure human quality and creativity in your texts.
Ensure that creative, high-stakes writing — reports, proposals, editorial content — is still driven by real human input. Stay compliant, protect IP authenticity, and build trust in what your teams produce.
Where Mentafy fits in a business - the top 3 use-cases
Business pricing is built around your scope, not a fixed package. These are the three situations we are asked for most often — if one of them sounds like you, we already know what your offer looks like.
Academic writing lectorates
Editing and coaching providers who work on student writing and need to prove their work strengthens the author rather than replacing them.
Typically used for
- Verifying that submitted work is the client's own before coaching starts
- Documenting the boundary between support and authorship
- Giving clients evidence they can show their institution
Content agencies and producers
Agencies producing editorial or SEO content at volume, often through freelance authors, who need a consistent quality gate before delivery.
Typically used for
- Checking freelance deliverables before they reach the client
- Confirming sources exist and are cited correctly
- Making an author quality standard measurable across a roster
Publishers and journals
Publishing teams under pressure from fabricated citations and paper mills, who need to be confident that what they publish is original and verifiable.
Typically used for
- Screening submissions before peer review
- Detecting fabricated or unverifiable references
- Documenting an auditable editorial decision trail
One line we do not cross. Mentafy exists to help people become better writers and clearer thinkers. We do not support services designed to help anyone pass off work that is not their own — and we say so to every business customer before we quote.
Just need it for yourself?
For single users and one-off documents, our individual word packages are the faster and cheaper route.
Tell us your use case
Volume, workflow and integration all shape the price. Describe what you need to check and how often, and we will send a concrete offer.