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Head-to-head · Plagiarism Checkers

iThenticate vs PlagiarismSearch

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score iThenticate #3 in Plagiarism Checkers 9.0/10 Paid ✓ 4 of 4 features Visit iThenticate
PlagiarismSearch #21 in Plagiarism Checkers 7.2/10 Free plan Free plan✓ 4 of 4 features Try PlagiarismSearch

iThenticate leads on 0 checks, PlagiarismSearch on 1, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreiThenticate · 9.0/10
  • Free planonly PlagiarismSearch

iThenticate scores higher on our rubric for plagiarism checkers: 9.0 against 7.2 out of 10; our editors rank them #3 and #21.

PlagiarismSearch offers free plan; iThenticate doesn't.

iThenticate is the better fit for researchers and publishers needing private-repository checks. PlagiarismSearch is the better fit for users wanting flexible reports and filtering.

  • iThenticate fits best

    Researchers and publishers needing private-repository checks

  • PlagiarismSearch fits best

    Users wanting flexible reports and filtering

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 iThenticate 9.0/10 Visit ↗ PlagiarismSearch 7.2/10 Visit ↗
At a glance
Editor score 9.0 7.2
Ranking #3 in Plagiarism Checkers #21 in Plagiarism Checkers
Best for Researchers and publishers needing private-repository checks Users wanting flexible reports and filtering
Pricing model Paid Free plan + paid
Starting price $125 one-time $114.95/yr
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Integrations 3 integrations 4 integrations
Features iThenticate 4/4 · PlagiarismSearch 4/4
Web source matching ✓ ✓
Academic source matching ✓ ✓
API access ✓ ✓
LMS integration ✓ ✓
Specs
Supported languages Not checked yet Not checked yet
Word limit Not checked yet 150 words
Report export formats PDF PDF, HTML
Our review
Pros
  • Checks internet, publication, Crossref, submitted-work, and private-repository content
  • Provides multiple report views, highlighted matches, and PDF downloads
  • Supports API, LTI, and SSO integrations for organizational accounts
  • Checks web, archived pages, publications, and academic sources
  • Exports matching-passage reports in PDF and HTML
  • Supports filtering, API access, Moodle, Google Docs, and bots
Cons
  • No free plan is available
  • The lowest-priced option costs $125 one time
  • Organization pricing is customized rather than published
  • The $9.95 Light plan includes only 1 plagiarism submission
  • Free checking is limited to 150 words without registration
  • Some plans use submission and time-frame limits
Our verdict

iThenticate is a web-based similarity-checking product for scholarly publishers, research departments, institutions, authors, and researchers. It compares submitted manuscripts and other documents with internet pages, archived web content,…

Read the review →

PlagiarismSearch is a web-based plagiarism checker for students, educators, writers, bloggers, and organizations. It compares submitted content with live and archived web pages, publications, academic papers, and private storage when…

Read the review →
  1. iThenticatePlagiarism Checkers 9.0Paid
  2. PlagiarismSearchPlagiarism Checkers 7.2Free plan

Strengths and trade-offs

  • iThenticate — where it wins

    • Checks internet, publication, Crossref, submitted-work, and private-repository content
    • Provides multiple report views, highlighted matches, and PDF downloads
    • Supports API, LTI, and SSO integrations for organizational accounts

    Where it doesn't

    • No free plan is available
    • The lowest-priced option costs $125 one time
    • Organization pricing is customized rather than published
  • PlagiarismSearch — where it wins

    • Checks web, archived pages, publications, and academic sources
    • Exports matching-passage reports in PDF and HTML
    • Supports filtering, API access, Moodle, Google Docs, and bots

    Where it doesn't

    • The $9.95 Light plan includes only 1 plagiarism submission
    • Free checking is limited to 150 words without registration
    • Some plans use submission and time-frame limits

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update