iThenticate

Name: iThenticate
Price: 125 USD

Web · API

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Freedom report

One barScore 5.0

Free tierNo free tier
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

iThenticate is ranked #28 of 31 in plagiarism checkers on Freedom251. It runs on API, Web. There is no free plan.

iThenticate plans and pricing

All plans

Single $125 once $125 (Exclusive of taxes) 1 manuscript up to 25,000 words · Credits valid for 12 months · 5 free revisions · AI writing detection not available ithenticate.com · 8 Oct 2026

Multiple $300 once $300 (Exclusive of taxes) Up to 3 manuscripts or one up to 75,000 words · Credits valid for 12 months · 5 free revisions · AI writing detection not available ithenticate.com · 8 Oct 2026

Organization On request Customized pricing based on organization size and plagiarism checking and reputation management needs ithenticate.com · 8 Oct 2026

Compared on plagiarism checkers

Free plan: No
API access: Yes

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The record

Purpose: iThenticate screens high-stakes documents for originality and potential misconduct before publication.
Intended users: Individual credits are intended for researchers, scholars, and graduate students preparing manuscripts, theses, or dissertations for publication and submission.
Similarity checking: The Similarity Report highlights matching text and compares submissions against billions of web pages, previously submitted works, and periodicals, journals, and publications.
Report interpretation: The similarity score indicates the percentage of text matching other sources and should be used as part of a review process to determine whether a match is acceptable.
Report tools: The Similarity Report offers match overview, all sources, match breakdown, and side-by-side comparison modes.
Integrations: iThenticate supports Crossref Similarity Check and its search targets can include Crossref content.
API: API access is available only for organizational accounts and requires contacting an iThenticate account sales representative.
API constraints: API requests use XML-RPC over SSL and are throttled to 60 requests per second per account.
Security: The service added multi-factor authentication by one-time passcode for iThenticate administrator sign-ins in September 2026.
Supported systems: The listed desktop operating systems are Windows 8.1, 10, and 11, Mac OS X El Capitan 10.11, and ChromeOS; supported browsers are current and previous versions of Chrome, Firefox, Safari, and Microsoft Edge.
Upload limits: Uploads are limited to 200 MB total, 100 MB per file, 800 pages per paper, and at least 20 words per file.
Support: iThenticate says its support team is available 24/7 and provides support by email at [email protected].
AI detection and individual plans: The Single and Multiple individual credit packages state that AI writing detection is not available.
Headquarters: Oakland, California

Where it ranks on Freedom251

Best Plagiarism Checkers in 2026#28 of 31
Best Plagiarism Detection Software in 2026#27 of 28
Best AI Plagiarism Checkers in 2026#24 of 26

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Sources

ithenticate.com· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27842305774605-Unders· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27244924185357-The-Si· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27547177897869-API-ac· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27834631555725-iThent· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/34065932643597-iThent· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27548881878797-System· checked 8 Oct 2026
guides.ithenticate.com/hc/en-us/articles/27835492585997-Upload· checked 8 Oct 2026
ithenticate.com/support· checked 8 Oct 2026