StrikePlagiarism

Paid#6 of 31 in Plagiarism CheckersAI Plagiarism Checkers

StrikePlagiarism: A broad academic checker with deep source coverage, workflow tools, and API access. Ranked #6 of 31 in Plagiarism Checkers by our editors (8.7/10); pricing: Paid; best for academic institutions needing broad, deep checking.

8.7/10★★★★☆Editor score

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StrikePlagiarism8.7 Try StrikePlagiarism

At a glance

• Editor score
  8.7 / 10
• Pricing
  Paid
• Best for
  Academic institutions needing broad, deep checking
• Free plan
  No
• Paid from
  €2.33/unit usage-based
• Web source matching
  Yes
• Founded
  2002 · Warsaw, Poland
• Facts checked
  21 Sep 2026

• Where it wins

  • Checks web, scholarly, academic, publisher, university, and partner sources
  • Adds paraphrase, translated-text, manipulation, and AI-content detection
  • Supports LMS integrations, assignment workflows, feedback, and REST API access

• Where it doesn't

  • Paid individual access is priced per token rather than per month
  • Additional checking services may increase the final price
  • Free-plan terms vary by region

Our verdict on StrikePlagiarism

StrikePlagiarism is a web-based academic integrity system for universities, schools, publishers, researchers, and individual authors. Its core function is similarity checking across open internet sources, scientific journals, academic repositories, university databases, publisher collections, and partner databases. Interactive reports show similarity coefficients, source breakdowns, and citation tracking. The product also covers grammar and spelling, paraphrasing, translated-text similarity, altered alphabets, microspaces, hidden characters, and AI-generated content. That breadth makes it suited to institutions managing varied academic submissions as well as authors checking individual documents.

Pricing is structured around access rather than a standard monthly subscription. The individual token plan costs $2.5 per token, with one token checking up to 18,000 characters and remaining valid for six months. Additional checking services may increase the final price. A free plan is available, with regional terms that include 10 free checks per month of 500 characters on the Azerbaijani pricing page. Institutions should therefore review the applicable regional offer and estimate token needs before choosing this model. It suits occasional or document-based checking, while organizations seeking a fixed recurring budget may prefer software with simpler subscription pricing.

For academic operations, StrikePlagiarism extends beyond a report generator. Assignment management includes deadlines, resubmissions, notifications, and cross-checking between submissions, while instructors can share reports and add feedback comments. The REST API supports document submission and similarity-report access, and integrations include Moodle, Canvas, Blackboard, Brightspace, Schoology, OJS, LDAP, and LTI 1.3. Those options fit schools and publishers with established digital workflows. Individual users or smaller teams that only need straightforward similarity checks may find the assignment, integration, and detection coverage broader than necessary.

Your product? Our editors can test StrikePlagiarism in depth and publish a review, labelled as paid · from $149/mo →

StrikePlagiarism pricing

All 4 StrikePlagiarism plans and prices →

StrikePlagiarism fact sheet

StrikePlagiarism integrations

StrikePlagiarism lists 7 integrations on its own site.

• Moodle
• Canvas
• Blackboard
• Brightspace
• OJS
• LDAP
• LTI 1.3

See all StrikePlagiarism integrations →

Alternatives to StrikePlagiarism

• Turnitin AI Writing DetectionA focused institutional tool for identifying text that may be AI-generated or modified.9.4
• Crossref Similarity CheckA focused manuscript-screening service with academic matching, reports, filters, and API access.9.2
• IiThenticateA paid similarity checker built for researchers, publishers, and private repositories.9.0

See all StrikePlagiarism alternatives →

StrikePlagiarism vs the competition

• StrikePlagiarism vs Turnitin AI Writing Detection
• StrikePlagiarism vs Crossref Similarity Check
• IStrikePlagiarism vs iThenticate
• CStrikePlagiarism vs Copyscape
• MStrikePlagiarism vs MOSS
• StrikePlagiarism vs DrillBit

Compare StrikePlagiarism with any tool side by side →

Featured on iTechGuides

StrikePlagiarism is listed in our Plagiarism Checkers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update