Plagiarism Detection Software in AI answers

Data as of Oct 21, 2026Based on 129 AI responsesReviewed by Dimitry Apollonsky

AI summary

Copyleaks and Turnitin are nearly tied across recommendations, with Copyleaks highlighted for enterprise integration and Turnitin favored for university academic integrity. For research writing feedback with citation checks, Paperpal is the usual answer.

What’s changing · since July

Since July, Copyleaksrising gained presence across general queries and recruitment checks. Turnitinfalling saw reduced visibility overall, while Thesifyfalling dropped out of common recommendations for writing feedback.

Most-mentioned brands

Rank and Mentioned in · since Jul 5

#	Brand	Recommended for	Mentioned in
1	Copyleaks 89% enterprise content verification and cross-over detection between academic and recruitment workflows	enterprise content verification and cross-over detection between academic and recruitment workflows	89%
1	Turnitin 88% institutional academic integrity checks backed by extensive student paper repositories	institutional academic integrity checks backed by extensive student paper repositories	88%
3	Originality.ai 81% content marketing teams and recruiters screening for AI-generated text	content marketing teams and recruiters screening for AI-generated text	81%
4	GPTZero 59% educators and recruiters analyzing text patterns and writing reports	educators and recruiters analyzing text patterns and writing reports	59%
5	Grammarly 43% general writing feedback paired with basic citation support	general writing feedback paired with basic citation support	43%
6	iThenticate 28% scholarly publishers verifying research manuscripts and grant proposals	scholarly publishers verifying research manuscripts and grant proposals	28%
6	Scribbr 24% individual students and instructors seeking Turnitin database checks without institutional access	individual students and instructors seeking Turnitin database checks without institutional access	24%
8	Pangram Labs 19% recruiting teams screening resumes and cover letters for AI writing	recruiting teams screening resumes and cover letters for AI writing	19%
8	Winston AI 19% scanning typed and handwritten documents using optical character recognition	scanning typed and handwritten documents using optical character recognition	19%
8	Quetext 16% contextual analysis combining deep search plagiarism detection with AI screening	contextual analysis combining deep search plagiarism detection with AI screening	16%
11	Copyscape 6%		6%
11	SciSpace 3%		3%
11	It's AI 3%		3%
14	QuillBot 2%		2%
14	Paperpal 2%		2%
14	Grammarly BusinessGrammarly product line 2%		2%
14	QuantumRecruit 2%		2%
14	Sapling 2%		2%
14	EyeSift 2%		2%
14	Sapling AI Resume DetectorSapling product line 1%		1%
14	Workday 1%		1%
14	Canvas by InstructureInstructure product line 1%		1%
14	Blackboard 1%		1%
14	PlagiarismCheck 1%		1%
14	SmartRecruiters 1%		1%
14	OpenAI 1%		1%
14	HRBLADE 1%		1%
14	Hue Write 1%		1%
14	NetusAI 1%		1%
14	Hive Moderation 1%		1%
14	ChatGPT WorkOpenAI product line 1%		1%
14	Undetectable AI 1%		1%
14	ZeroGPT 1%		1%
14	DrillBit 1%		1%
14	UnicheckTurnitin product line 1%		1%
14	Copyscape CopySentryCopyscape product line 1%		1%
14	GeminiAlphabet product line 1%		1%
14	Stealth Writer 1%		1%
14	Smodin 1%		1%
14	ProQuestOwned by Clarivate 1%		1%

Mentioned in on each engineChatGPT SearchGoogle AI Mode

Widest split: iThenticate, 43% on ChatGPT Search and 13% on Google AI Mode.

Mentioned in on each AI engine, by brand
Brand	ChatGPT Search	Google AI Mode
Turnitin	100%	75%
Copyleaks	97%	81%
Originality.ai	85%	77%
GPTZero	57%	61%
Grammarly	29%	56%
iThenticate	43%	13%
Scribbr	20%	28%
Winston AI	22%	16%
Pangram Labs	14%	23%
Quetext	9%	23%

Latest insights

Weeks of Aug 17 – Oct 5, 2026 · Since Jul 5

Copyleaks Gap between platforms: The platform gap for Copyleaks in Plagiarism Detection Software narrowed to 14.9 points, ChatGPT Search ahead
Turnitin Gap between platforms: ChatGPT Search now names Turnitin 18.2 points more often than Google AI Mode in Plagiarism Detection Software, a widened gap
Grammarly Gaining: Grammarly ranked #9 in Plagiarism Detection Software last week and #5 this week
Grammarly Gap between platforms: Grammarly's mention rate is higher on Google AI Mode than on ChatGPT Search in Plagiarism Detection Software: 18.2% vs 9.1%
Grammarly Gaining: Grammarly's mention rate in Plagiarism Detection Software rose 6.5 points to 15.2%

and 7 more insightssee the ranking

Questions and answers

I'm looking for a way to ensure our AI-generated content is original and not plagiarized. What is the best AI plagiarism checker?
I cannot determine if the resumes I'm receiving are written by AI. Who offers detection tools specifically for academic and recruitment plagiarism?
What’s the strongest writing feedback tool with citation checks?

Sources AI cites99

46% of citations point at the ranked brands’ own sites. youtube.com, arxiv.org, theairankings.com are the most-cited sites outside the ranked brands’ own domains.