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Head-to-head · Plagiarism Checkers

iThenticate vs Copyscape

  • 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
Copyscape #4 in Plagiarism Checkers 8.9/10 Free plan Free plan✓ 2 of 4 features Visit Copyscape

iThenticate leads on 0 checks, Copyscape 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 Copyscape
  • Most featuresiThenticate · 4 of 4

iThenticate scores higher on our rubric for plagiarism checkers: 9.0 against 8.9 out of 10; our editors rank them #3 and #4.

Copyscape offers free plan; iThenticate doesn't.

iThenticate is the better fit for researchers and publishers needing private-repository checks. Copyscape is the better fit for web publishers and teams checking site content.

  • iThenticate fits best

    Researchers and publishers needing private-repository checks

  • Copyscape fits best

    Web publishers and teams checking site content

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 ↗ Copyscape 8.9/10 Visit ↗
At a glance
Editor score 9.0 8.9
Ranking #3 in Plagiarism Checkers #4 in Plagiarism Checkers
Best for Researchers and publishers needing private-repository checks Web publishers and teams checking site content
Pricing model Paid Free plan + paid
Starting price $125 one-time —
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud, Self-hosted
Platforms Web Web
Integrations 3 integrations 1 integrations
Features iThenticate 4/4 · Copyscape 2/4
Web source matching ✓ ✓
Academic source matching ✓ (best) Not checked yet
API access ✓ ✓
LMS integration ✓ (best) Not checked yet
Specs
Supported languages Not checked yet Not checked yet
Word limit Not checked yet Not checked yet
Report export formats PDF JSON, XML, 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
  • Batch Search checks up to 10,000 website pages
  • Private indexes support internal duplication checks
  • API, WordPress, case tracking, and team management included
Cons
  • No free plan is available
  • The lowest-priced option costs $125 one time
  • Organization pricing is customized rather than published
  • Premium searches use pay-per-search pricing
  • Academic-source matching is not part of its stated focus
  • The free checker focuses on finding copies of web pages
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 →

Copyscape is an online plagiarism detection service for content managers, website owners, publishers, educators, and organizations. It checks pasted text, uploaded PDF and Word files, and website pages for matching content. The product is…

Read the review →
  1. iThenticatePlagiarism Checkers 9.0Paid
  2. CopyscapePlagiarism Checkers 8.9Free 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

  • Copyscape — where it wins

    • Batch Search checks up to 10,000 website pages
    • Private indexes support internal duplication checks
    • API, WordPress, case tracking, and team management included

    Where it doesn't

    • Premium searches use pay-per-search pricing
    • Academic-source matching is not part of its stated focus
    • The free checker focuses on finding copies of web pages

More comparisons

All plagiarism checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update