Turnitin Similarity

6.2easy start · #22of 26
in AI Plagiarism Checkers

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Runs where you workno

Runs on api, Web.

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Turnitin Similarity is ranked #22 of 26 in AI plagiarism checkers on The Geeks Club. It runs on API, Web.

Turnitin Similarity plans and pricing

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Turnitin Similarity Contact sales for pricing Institutional product · pricing not stated on the opened page turnitin.co.uk · 3 Oct 2026

Compared on AI plagiarism checkers

Source coverage: web_academic_and_publisher
Supported file formats: DOC, DOCX, XLS, XLSX, PPT, PPTX, PostScript, PDF, HTML, HWP, RTF, ODT, WordPerfect, TXT
LMS integrations: Yes
API access: Yes
Report export: pdf
AI writing check: Yes

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The record

Purpose: Turnitin Similarity compares student work with existing content to help educators review potential plagiarism and student collusion.
Similarity reports: Reports show a similarity score, colour-coded matches, side-by-side source comparisons, and options to exclude matches.
Content coverage: The product compares work with student submissions, current and archived web pages, and premium publisher articles across 170 languages.
Flags panel: The Flags Panel highlights potentially manipulated text, including replaced or hidden characters.
Similarity is not a plagiarism verdict: Turnitin says Similarity flags text matches that may constitute plagiarism but does not determine whether plagiarism occurred.
Formative use: The product supports formative resubmissions through an LMS and is presented as a way to help students improve originality before final submission.
Integrations: Turnitin Similarity can be used on the web or integrated natively or through API and LTI 1.3 with LMSs including D2L, Canvas, Moodle, and Sakai.
Security: The product page states that data is protected with SSL encryption, redundant servers, SOC 2-certified data centres, and GDPR compliance.
AI detection add-on: AI writing and AI paraphrasing detection are available through the Turnitin Originality add-on, with the AI feature noted as English-only.
Supported users: Turnitin identifies students, instructors, and administrators as users the product supports.
Support: Turnitin directs users to its Help Center for product guides, release notes, searchable help content, and technical support contact options.
Company: Turnitin says it has served the global education community since 1998 and lists an office in Oakland, California.

Where it ranks on The Geeks Club

Best AI Plagiarism Checkers in 2026#22 of 26

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Sources

turnitin.co.uk/products/similarity/· checked 3 Oct 2026
in.turnitin.com/about/· checked 3 Oct 2026