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Head-to-head · AI Plagiarism Checkers

Turnitin Similarity vs Compilatio Magister+

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Turnitin Similarity #3 in AI Plagiarism Checkers 9.2/10 Pricing on request ✓ 3 of 3 features Visit Turnitin
Compilatio Magister+ #5 in AI Plagiarism Checkers 8.8/10 Pricing on request ✓ 1 of 3 features Visit Compilatio

Turnitin Similarity leads on 0 checks, Compilatio Magister+ on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreTurnitin Similarity · 9.2/10
  • Most featuresTurnitin Similarity · 3 of 3

Turnitin Similarity scores higher on our rubric for ai plagiarism checkers: 9.2 against 8.8 out of 10; our editors rank them #3 and #5.

Turnitin Similarity is the better fit for institutions prioritizing established similarity workflows. Compilatio Magister+ is the better fit for institutions needing multilingual and OCR checking.

  • Turnitin Similarity fits best

    Institutions prioritizing established similarity workflows

  • Compilatio Magister+ fits best

    Institutions needing multilingual and OCR checking

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Turnitin Similarity 9.2/10 Visit ↗ Compilatio Magister+ 8.8/10 Visit ↗
At a glance
Editor score 9.2 8.8
Ranking #3 in AI Plagiarism Checkers #5 in AI Plagiarism Checkers
Best for Institutions prioritizing established similarity workflows Institutions needing multilingual and OCR checking
Pricing model Paid Paid
Starting price Pricing on request Pricing on request
Free plan Not checked yet —
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Integrations 4 integrations 6 integrations
Features Turnitin Similarity 3/3 · Compilatio Magister+ 1/3
LMS integrations ✓ (best) Not checked yet
API access ✓ ✓
AI writing check ✓ (best) Not checked yet
Specs
Source coverage Web_academic_and_publisher Not checked yet
Maximum document words Not checked yet Not checked yet
Supported file formats DOC, DOCX, XLS, XLSX, PPT, PPTX, PostScript, PDF, HTML, HWP, RTF, ODT, WordPerfect, TXT Not checked yet
Report export Pdf Not checked yet
Our review
Pros
  • Compares work against student, web, scholarly, and publisher content
  • Provides match groups, source comparisons, filtering, and integrity flags
  • Supports LMS workflows, PDF reports, and API submission and retrieval
  • Checks web, academic, scientific, and institutional sources
  • Adds translation, semantic rephrasing, AI, grammar, and OCR analysis
  • Supports six LMS integrations, API access, and PDF reports
Cons
  • Institutional pricing requires contacting sales
  • AI-writing detection requires the Turnitin Originality add-on
  • Designed for institutional workflows rather than standalone individual use
  • No free plan is offered
  • Pricing requires a customized quote from sales
  • Designed for educational establishments rather than individual users
Our verdict

Turnitin Similarity is an institutional originality-checking product for schools, colleges, universities, instructors, administrators, and students. It compares submissions against student papers, current and archived web pages, scholarly…

Read the review →

Compilatio Magister+ is an online plagiarism and AI-content checker for teachers and educational institutions. It compares submitted work with web sources, institutional documents, academic and scientific references, and other content. Its…

Read the review →
  1. Turnitin SimilarityAI Plagiarism Checkers 9.2Pricing on request
  2. Compilatio Magister+AI Plagiarism Checkers 8.8Pricing on request

Strengths and trade-offs

  • Turnitin Similarity — where it wins

    • Compares work against student, web, scholarly, and publisher content
    • Provides match groups, source comparisons, filtering, and integrity flags
    • Supports LMS workflows, PDF reports, and API submission and retrieval

    Where it doesn't

    • Institutional pricing requires contacting sales
    • AI-writing detection requires the Turnitin Originality add-on
    • Designed for institutional workflows rather than standalone individual use

  • Compilatio Magister+ — where it wins

    • Checks web, academic, scientific, and institutional sources
    • Adds translation, semantic rephrasing, AI, grammar, and OCR analysis
    • Supports six LMS integrations, API access, and PDF reports

    Where it doesn't

    • No free plan is offered
    • Pricing requires a customized quote from sales
    • Designed for educational establishments rather than individual users
  • Turnitin Similarity9.2/10 · Pricing on request

    A broad academic similarity workflow with LMS, reporting, filtering, and API support.

    Visit TurnitinFull verdict →
  • Compilatio Magister+8.8/10 · Pricing on request

    A broad institutional checker with multilingual, OCR, AI, and LMS capabilities.

    Visit CompilatioFull verdict →

More comparisons

All AI plagiarism checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update