Tool profile
PlagiarismSearch: cost, fit and limits
PlagiarismSearch is an online plagiarism and AI detection service operated by System Technology Online Spain SL that sells one-time and monthly packages of plagiarism and AI submissions, with paper analysis, an API and a Viber and Telegram chat bot.
What to know first
PlagiarismSearch sells by package. A Light one-time package costs $9.95 for one plagiarism and one AI submission with no time limit, Standard gives 10 of each for $17.95, and Premium gives 50 of each for $41.95. Monthly Light and Premium add recurring allowances, and Premium monthly adds API access and storage. The prices page shows dollar signs without naming a currency, and the policy says content may be stored in the United States.
PlagiarismSearch at a glance
| Maker | System Technology Online Spain SL, Spain |
|---|---|
| Free plan | No |
| Entry price | $9.95 one-time (Light package) |
| API access | Yes |
| Category | Best AI Plagiarism Checkers in 2026, rank 5 of 13 |
| Website | plagiarismsearch.com |
Who PlagiarismSearch is best for
One-off checkers
Pay once for a package with no expiry, so someone who checks a document every few months never carries a subscription.
Writing services and editors
The Premium monthly package gives 300 plagiarism and 300 AI submissions in a 30-day window, which fits a service that checks dozens of client files.
Developers adding checks to a platform
Premium monthly includes API access and a customizable API embeds detection in third-party platforms, though API pricing outside the package was not captured.
Mobile-first users
A chat bot runs plagiarism and AI detection through Viber and Telegram, which suits users who prefer messaging apps to a web form.
PlagiarismSearch plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Light (one-time) | $9.95 | One plagiarism submission and one AI submission with an unlimited time frame, bought once with no recurring payment. |
| Standard (one-time) | $17.95 | Ten plagiarism submissions and ten AI submissions with an unlimited time frame, a better per-check rate for students with several drafts. |
| Premium (one-time) | $41.95 | Fifty plagiarism submissions and fifty AI submissions with an unlimited time frame, for users who check regularly but do not want a subscription. |
| Light (monthly) | $22.95 | One hundred plagiarism submissions in a 30-day time frame with recurring payments; the pages read list no AI submissions for this plan. |
| Premium (monthly) | $54.95 | Three hundred plagiarism and 300 AI submissions, API access, access to storage and a 30-day time frame with recurring payments. |
Checked November 2026.
What PlagiarismSearch does
- Multi-source plagiarism check
- Checks run against web, archived, publication and academic database sources, so the report covers more than live web pages, which matters for papers that quote older journals or archived material.
- AI submissions
- AI detection is sold as separate submissions inside each package, which makes the number of AI checks explicit but means plagiarism and AI counts are not interchangeable between packages.
- Paper analysis
- A separate analysis looks at structure, originality and writing quality, which helps an author who wants structured feedback on the paper as well as a match report listing sources.
- Readability and spell check
- A readability check and a spell check are listed as separate tools, so a user can polish a paper without leaving the site, although the pages read do not describe their depth.
- Customizable API
- An API embeds plagiarism detection in third-party platforms, for example a learning platform or a submission portal, and is listed with the Premium monthly package, so developers pay a monthly fee rather than per call.
- Messaging chat bot
- Users can run plagiarism and AI detection from Viber or Telegram, a convenience feature that suits quick checks from a phone and that no other tool in this ranking lists.
How PlagiarismSearch handles your data
The privacy policy says customer content may be stored on infrastructure in the United States, with some processing in Europe. Reports stay available until deleted, and after about 30 days they can move to an archive with some report-editing functions removed. Reports may be removed after five years under the long-term retention process. The pages read do not state whether customer documents train models and name no certification, so the vendor's policy was not checked for those points.
Where PlagiarismSearch falls short in practice
- Currency not named. The prices page shows a dollar sign without a currency code, so a buyer outside the United States should confirm the charged currency and any tax at checkout.
- Archive after about 30 days. Reports move to an archive after about 30 days, where some editing functions may no longer work, so finish annotating a report within the first month.
- US storage. Content may be stored in the United States with some processing in Europe, so a buyer with strict EU residency rules needs more detail than the policy gives.
Works with
Alternatives to PlagiarismSearch
PlagiarismSearch: common questions
Do the one-time packages expire?
No. The prices page shows an unlimited time frame on the one-time Light, Standard and Premium packages, so unused submissions stay available. The monthly packages instead run on a 30-day time frame with recurring payments, which is a better fit only when you scan every month.
How many AI checks does the cheapest package include?
The $9.95 Light one-time package includes one plagiarism submission and one AI submission, so it covers a single document. Standard at $17.95 includes ten of each and Premium at $41.95 includes fifty of each. The Light monthly package lists plagiarism submissions only.
Does PlagiarismSearch have an API?
Yes. A customizable API embeds plagiarism detection in third-party platforms, and API access is listed on the Premium monthly package at $54.95. The pages read give no separate API price or rate limit, so confirm both with the vendor before building on it.
Where does PlagiarismSearch keep my documents?
The privacy policy says customer content may be stored on infrastructure in the United States, with some processing in Europe. Reports stay until deleted, may move to an archive after about 30 days and may be removed after five years. No certification was named.
Can I check plagiarism through Telegram?
Yes. A chat bot runs plagiarism and AI detection through Viber and Telegram according to the homepage. The pages read do not describe limits or whether chat uploads count against the same package allowance, so ask the vendor before using it for sensitive documents.