Quetext AI detector
Vendor Quetext Software LLC Official site quetext.com/ai-content-detector How this card is sourced
Quetext's AI detector takes up to 1,000 words per free scan and states coverage of 25 languages on its product page (quetext.com/ai-content-detector, read 9 November 2026). The vendor is Quetext Software LLC of Wilmington, Delaware, a plagiarism checker company whose privacy policy was last updated October 14, 2026 (quetext.com/privacy-policy, read 9 November 2026). The card is one of the text detectors in the detector index, and how this card is sourced explains why its retention field quotes two vendor statements that do not agree.
What Quetext detects
| Field | Value | Source |
|---|---|---|
| Content types detected | Text | quetext.com/ai-content-detector |
| Generators covered | ChatGPT and GPT-5 (OpenAI), Claude, Gemini (Google), Llama (Meta), Mistral, Bard, GPT-3 and GPT-4 (older page copy) | quetext.com/ai-content-detector |
| Languages | Spanish, French, German, Arabic, Hindi, Japanese, Korean (25 listed) | quetext.com/ai-content-detector |
| Input limits | Web tool: paste or type up to 1,000 words per free scan (0 / 1,000 words counter); paid plans meter the AI Detector by words per month (100,000 on Essential, 200,000 on Professional) and allow bulk uploads of 20 or 100 files in .doc, .docx, .pdf or .txt. API: POST /api/v2/ai-detect-report with an X-API-Key header, billed at $0.10 per 1,000 words analyzed from a prepaid wallet, with 5,000 free words to start; per-sentence AI probability is returned. The FAQ says detectors perform better on longer, structured text but may struggle with short phrases. | quetext.com/integrations |
| Free tier | Free plan, $0/month: AI Content Detector up to 1,000 words and DeepSearch plagiarism checker up to 1,000 words, no credit card; the detector page says Free scans up to 1,000 words. The API gives 5,000 free words to start | quetext.com/pricing |
| API | Yes, quetext.com/developers-api | quetext.com/developers-api |
| Integrations | Chrome AI Detector extension, Chrome Plagiarism Checker extension, Firefox add-on, Microsoft Edge extension, Google Docs add-on (Google Workspace Marketplace), Quetext MCP (app.quetext.com/mcp, 8 tools including create_ai_detection_report), REST API v2, Bulk Scan (up to 100 documents), URL Checker | quetext.com/integrations |
| Data retention | Detector page FAQ: Will my scanned text be saved or used for training? No. Quetext respects your privacy. Your scanned content is not stored, saved, or used to train any models. Privacy Policy (last updated October 14, 2026), section 6.1: We may include User Content and Service Usage Data in Quetext's AI Systems training, fine-tuning, evaluation, and quality-assurance workflows, based on our legitimate interests or, where required by law, your consent. You may opt-out of future inclusion by emailing privacy@quetext.com with subject AI Opt-Out. Section 11: We retain Personal Data only as long as necessary to provide the Services; We may retain Aggregated and Derived Data indefinitely. Google Workspace add-on content is excluded from AI training. | quetext.com/privacy-policy |
| Ownership | Quetext Software LLC, 251 Little Falls Drive, Wilmington, DE 19808, USA (Privacy Policy last updated October 14, 2026); Delaware law governs; the Terms of Service (last updated October 2025) bind the user to Quetext Software LLC; footer 2026, Quetext Software LLC. The detector sits inside a plagiarism checker suite that also sells an AI Humanizer and the AITutorMe paraphrasing tool. | quetext.com/privacy-policy |
The product page header reads "Detect AI-written text from ChatGPT, GPT-5, Claude, Gemini & Llama with line-by-line accuracy", and the scan box lists ChatGPT, Claude, Gemini, Llama and Mistral as targets (quetext.com/ai-content-detector, read 9 November 2026). Older copy further down the same page names Bard, GPT-3 and GPT-4. The method is described as analysis of "writing patterns, perplexity, and burstiness", and the output is a confidence score with sentence-level highlights that the vendor calls ColorGrade: "Quetext shows a confidence level based on linguistic patterns, repetition, and syntactic features", including "predictability of word choice" and "sentence rhythm and structural repetition".
Languages are a count with a short list. The product page's stat strip says "25 Supported languages", and the pricing FAQ repeats it: "Our AI Detector also works in 25 languages, including Spanish, French, German, Arabic, Hindi, Japanese and Korean" (quetext.com/pricing, read 9 November 2026). A bullet under the plan cards on the same pricing page says "17+ languages". The card records 25 with seven named, the treatment the index gives Copyleaks' "30+", and the 17 is filed as a contradiction.
Input limits differ by surface, read 9 November 2026. The web tool's counter reads "0 / 1,000 words" and the header says "Free scans up to 1,000 words"; paid plans meter the detector by words a month, 100,000 on Essential and 200,000 on Professional, with bulk uploads of 20 or 100 files in .doc, .docx, .pdf or .txt (quetext.com/pricing). The API accepts a POST to /api/v2/ai-detect-report with an X-API-Key header and returns per-sentence AI probability (quetext.com/integrations). Integrations are Chrome, Firefox and Edge extensions, a Google Docs add-on on the Google Workspace Marketplace, a remote MCP server at app.quetext.com/mcp with eight tools including create_ai_detection_report, the REST API, a bulk scan of up to 100 documents and a URL checker (same page). No LMS integration is listed. The nearest cards are Scribbr, the other detector sold from a plagiarism checker, and Copyleaks, which Quetext's own comparison table sets itself against.
Limits and plans
| Plan | Price | Limits | Checked on |
|---|---|---|---|
| Free | $0/month | AI Content Detector (up to 1,000 words); DeepSearch Plagiarism Checker (up to 1,000 words); AI Summarizer (up to 2,000 words); AI Humanizer (up to 500 words); website citation generator; citation assistant. API Access not included. | |
| Essential | Starting from $14.99/mo (100k words/month; monthly and yearly toggle) | Plagiarism Checker (100k words); AI Detector (100k words); AI Humanizer and Summarizer; bulk uploads (20 files); AITutorMe (25k words/month); grammar and spell check. API Access not included. | |
| Professional | Starting from $29.98/mo (200k words/month; 40% off badge; monthly and yearly toggle) | Plagiarism Checker (200k words); AI Detector (200k words); API Access + Remarks Tool; bulk uploads (100 files); AI Summarizer, AI Humanizer and AITutorMe (50k words/month each); unlimited users (contact support above 150). | |
| Developer API | $0.10 per 1,000 words analyzed | 5,000 free words to start; free reads and downloads; plagiarism and AI detection reports with per-sentence AI probability and PDF export. |
The Free plan is $0 a month and lists "AI Content Detector (up to 1,000 words)" beside the plagiarism checker at the same limit, a 2,000-word summarizer and a 500-word humanizer, with no API access (quetext.com/pricing, read 9 November 2026). The pricing page does not say whether the 1,000 words is a per-scan or a monthly figure, and the product page says "Free scans up to 1,000 words", so the card records no free-words-per-month value and the free tiers ranking lists Quetext in its second table. The page shows a currency switch for USD, AUD, GBP, CAD, INR and EUR and a Monthly and Yearly toggle on the paid cards; figures below are the USD figures as displayed, read 9 November 2026.
The product page's own comparison table gives a different starting price: "$5.49/mo Billed annually. Monthly option: $7.99/mo" for Quetext, against GPTZero, ZeroGPT and Copyleaks (quetext.com/ai-content-detector, read 9 November 2026). The pricing page, read the same day, shows no plan at either figure, so the card carries the pricing page and files the table's figures as a contradiction.
Retention is the field where the vendor's pages disagree most. The detector FAQ answers "Will my scanned text be saved or used for training?" with "No. Quetext respects your privacy. Your scanned content is not stored, saved, or used to train any models" (quetext.com/ai-content-detector, read 9 November 2026). The privacy policy, last updated October 14, 2026, says in section 6.1: "We may include User Content and Service Usage Data in Quetext's AI Systems training, fine-tuning, evaluation, and quality-assurance workflows", with an opt-out by email that "does not apply to" data already derived or models already trained, and in section 11 that Personal Data is kept "only as long as necessary to provide the Services" while "Aggregated and Derived Data" may be kept "indefinitely" (quetext.com/privacy-policy, read 9 November 2026). The policy defines User Content as "text, documents, files, images, feedback, and any other materials you submit, upload, paste". Only content checked through the Google Docs add-on is excluded from training. The card takes the dated policy over the FAQ, records no retention period, and the data retention ranking quotes both in its unranked table.
What the vendor claims
Detect AI-written text from ChatGPT, GPT-5, Claude, Gemini & Llama with line-by-line accuracy. (Detector page header.) FAQ: Our AI Content Detector has been highly accurate in testing, consistently providing accurate detection of ChatGPT-generated writing. While no tool is perfect, our detector provides confidence scores and highlights specific areas. No accuracy rate, sample or test date is published.
Quetext states no accuracy rate. The product page's claim is "line-by-line accuracy" in its header and, in the FAQ, that the detector "has been highly accurate in testing, consistently providing accurate detection of ChatGPT-generated writing" (quetext.com/ai-content-detector, read 9 November 2026). The answer to "How accurate is Quetext's AI detection?" gives no number: "While no tool is perfect, our detector provides confidence scores and highlights specific areas." No false positive rate is published, so the card is absent from the false positive ranking.
The vendor's caveats are plain. "They can produce false positives and false negatives, meaning they may incorrectly flag human-written text or fail to detect AI-generated content"; detectors "perform better on longer, structured text but may struggle with short phrases"; and "it's not about punishing the use of AI it's about maintaining transparency" (same page, read 9 November 2026). On paraphrase the page claims coverage: the detector "analyses sentence structure, tone, and predictability to flag content that may have been paraphrased or lightly edited from an AI draft", a claim no indexed study has measured. The same suite sells an AI Humanizer and routes flagged text into AITutorMe, a paraphrasing tool, which is the caveat a reader should carry away: a detector whose vendor also sells the rewrite.
What independent studies found
No study record in the studies index has tested Quetext as of 9 November 2026. Quetext was not among the 14 tools in Weber-Wulff 2023 or the 16 in Walters 2023, and Van Vlasselaer 2026, which scored detectors on 40 humanised papers, did not include it. The study count on this card is zero, and with no vendor percentage there is nothing for the claim versus evidence gap to compute.
The vendor's own account of its method, "advanced linguistic models trained to spot common patterns in AI writing" (quetext.com/ai-content-detector, read 9 November 2026), names no model version, training date or benchmark.
Where Quetext appears in the index
Rankings
- AIDI-R-04AI detectors ranked by languages supported
- AIDI-R-05AI detectors ranked by maximum input per check
- AIDI-R-11AI detectors ranked by named integration surfaces
- AIDI-R-12AI detectors ranked by the upload formats the vendor states
- AIDI-R-14AI detector APIs ranked by published price per 1,000 words
- AIDI-R-17AI detectors ranked by the generator models the vendor names
Quetext appears in one ranking, on a vendor-stated value read 9 November 2026 in the data file: languages lists its stated 25 with seven named. The 1,000 words per free scan qualifies the card for maximum input per check. It also qualifies for detectors with an API on the metered v2 endpoint. It is absent from the studies-based rankings, which need a record, from the free tiers ranking, which needs a monthly figure the vendor does not state, from the data retention ranking, which needs one clear period, and from LMS integrations.
Every detector card on the register shows the same fourteen fields, so the detector that writes "not stored" on one page and "may include User Content" in training on another can be read in the same columns as the detectors whose pages agree.
Questions about Quetext AI detector
Is the Quetext AI detector free?
Yes, within limits: the Free plan is $0 a month with the AI Content Detector up to 1,000 words and no credit card, and the product page says free scans take up to 1,000 words, read 9 November 2026.
How much does Quetext cost?
Essential starts from $14.99 a month for 100,000 words and Professional from $29.98 a month for 200,000 words on the pricing page; the product page's comparison table quotes $5.49 a month billed annually, which no plan on the pricing page matches, read 9 November 2026.
How many languages does Quetext's AI detector support?
25, per the product page and the pricing FAQ, which names Spanish, French, German, Arabic, Hindi, Japanese and Korean; a bullet on the pricing page says 17+, read 9 November 2026.
Does Quetext store or train on the text you check?
The detector FAQ says scanned content "is not stored, saved, or used to train any models"; the privacy policy of October 14, 2026 says User Content "may" be included in AI training unless the user opts out by email, read 9 November 2026.
Does Quetext have an AI detection API?
Yes. POST /api/v2/ai-detect-report with an X-API-Key header, billed at $0.10 per 1,000 words from a prepaid wallet with 5,000 free words to start, per the integrations page read 9 November 2026.
Has any independent study tested Quetext?
No record in this index as of 9 November 2026; Quetext was not among the 14 tools in Weber-Wulff 2023 (arXiv 2306.15666), the 16 in Walters 2023 (DOI 10.1515/opis-2022-0158) or the detectors in Van Vlasselaer 2026, read 9 November 2026.
Sources and revisions
Sources
- quetext.com/ai-content-detectorRead 9 November 2026
- quetext.com/pricingRead 9 November 2026
- quetext.com/integrationsRead 9 November 2026
- quetext.com/ai-detector/chrome-extensionRead 9 November 2026
- quetext.com/privacy-policyRead 9 November 2026
- quetext.com/terms-of-serviceRead 9 November 2026
- quetext.com/aboutRead 9 November 2026




