Turnitin
50Institutional similarity checking and AI-writing indicators for assignments, exams and manuscripts
United StatesAdded 2mo ago
ContactAPI
88trust score out of 100
PlagiarismCheck.org alternatives
3 products our research names as a replacement for PlagiarismCheck.org in AI Detection & Humanizers, each with what it does differently — prices, API and status from our own checks rather than from the vendors’ own pages.
GPTZero
71Estimates whether text was machine-written and flags the sentences
United StatesAdded 2mo ago
Freemiumfrom $12.99/moAPI
86trust score out of 100
has a free tier
PlagiarismCheck.org vs GPTZero →AI-text and plagiarism detection built for publishers and agencies
CanadaAdded 2mo ago
Freemiumfrom $14.95/moAPI
89trust score out of 100
has a free tier
PlagiarismCheck.org vs Originality.AI →More in AI Detection & Humanizers
Not named as direct replacements — neighbours from the same part of the catalog: the best-rated first, then a sample of the rest.
Rewrites AI-generated text to slip past AI detectors
United StatesAdded 2mo ago
PaidAPI
86trust score out of 100
2
Free in-browser rewriter that reworks AI-generated text to read as human, with paid tiers for longer runs and a detector.
United KingdomAdded 2mo ago
Freemiumfrom $12/mo
83trust score out of 100
1
Free, no-account essay checker that scores AI likelihood, grades against a rubric and fixes grammar
United KingdomAdded 2mo ago
Free
87trust score out of 100
1
Rewrites AI-generated text to read as human-written, with a built-in AI-detection score and 60+ languages.
Added 1mo ago
Freemiumfrom $8/moAPI
56trust score out of 100
Checks essays against Turnitin, GPTZero and other detectors, then rewrites flagged passages to read as human-written.
United StatesAdded 1mo ago
Freemiumfrom $10/mo
87trust score out of 100
1
Detects AI-generated text, images, documents, voice, and video, with a confidence score and REST API.
GermanyAdded 1mo ago
Freemiumfrom $10 onceAPI
80trust score out of 100
1
Ryne AI
69Rewrites AI-written text to read as human and pass detectors like Turnitin, bundled with a student chat and essay suite.
Added 1mo ago
Freemiumfrom $19.99/mo
69trust score out of 100
Rewrites AI-written text to read as human and scores it against detectors in the same pass
United StatesAdded 2mo ago
Freemiumfrom $20/mo
87trust score out of 100
Rewrites AI-drafted text to read as human-written and lower AI-detector scores; free per-run tier, paid word plans and an API.
United KingdomAdded 1mo ago
Freemiumfrom $12/moAPI
82trust score out of 100
1
Rewrites AI-generated text so it stops tripping Turnitin, GPTZero, Originality and similar detectors
IndiaAdded 2mo ago
Freemiumfrom $10/moAPI
89trust score out of 100
1
Rewrites AI-generated drafts to read as human writing
United StatesAdded 2mo ago
Freemiumfrom $14/moAPI
94trust score out of 100
2
Rewrites AI drafts to read as human prose, with a built-in detector check, sold by weekly word allowance.
Added 2mo ago
Paidfrom $6.99/wk
76trust score out of 100
3
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