Textumi and QuillBot at a glance
Checked on 20.10.2026. QuillBot's main website did not open for automated reading, so its facts come from QuillBot's own blog and its listings in the Chrome Web Store, the Edge Add-ons store and the App Store. Textumi facts come from our product.
| Textumi | QuillBot | |
|---|---|---|
| Detection languages | 20 text languages; English and Ukrainian are the longest-established | English, French, Spanish, German, Dutch and Portuguese, according to its blog |
| Check without an account | Yes, AI Detector only: 5 to 250 words, three checks a day | Yes, under 1,200 words per scan; its blog names six free scans a day |
| Most text in one check | 12,000 characters with an account | Longer texts and bulk upload of documents in Premium |
| How the result is shown | One of five labels on a gauge, plus the passages behind it | Percentages and four categories, from AI-generated to human-written, marked sentence by sentence |
| Humanizer | Yes, with facts, names and numbers checked against the original | An AI humanizer and a paraphraser, listed as separate tools |
| Plagiarism check | No | Yes, a separate plagiarism checker |
| Text from files and pages | DOCX, PDF, ODT, RTF, TXT and MD up to 10 MB, public web pages, text in PNG and JPEG images | Paste text or upload a document; bulk upload in Premium |
| Native macOS app | Yes, for Macs with Apple silicon | QuillBot for macOS is named on its blog; whether it includes the detector is not stated |
| Connector for AI assistants (MCP) | Yes, for Claude, ChatGPT and other assistants that support MCP | Not listed on its pages |
| Browser extensions and phone apps | Chrome extension; no phone app | Chrome and Edge extension with the detector; Safari extension; iPhone app with AI detection |
| Request history | Private History for 30 days on Individual and Professional | See its privacy policy |
| Prices | See the Textumi pricing page | See QuillBot's pricing page |
How each tool shows a result
Textumi shows you a needle on a “Human” to “AI” scale, and labels the result with one of five labels, from “Human-written” to “AI-generated”. With an account, you can also see which passages mattered most in that result. If the text is shorter than 50 words, it shows “Too little text to judge” instead of a label.
QuillBot sorts the text into four categories: AI-generated, AI-generated and AI-refined, human-written and AI-refined, and human-written. Its blog says the report gives percentages for AI-generated and AI-refined content and shows the result sentence by sentence, with an explanation for flagged sentences.
A label and a percentage are both a model's estimate from the wording. Neither proves who wrote a text, and a percentage is not a measured share of generated text.
Which languages each detector covers
Textumi detects AI writing in 20 text languages. The English and Ukrainian detectors have the longest record. Detectors for other languages were built and tested on a smaller set of texts, and some of them miss many AI texts in other genres, so a longer text gives a steadier result there.
QuillBot's blog names six languages for its AI detector: English, French, Spanish, German, Dutch and Portuguese. Polish and Ukrainian are not on that list.
Rewriting a draft: two different approaches
The Textumi Humanizer is located in the same account as the detector. It rewrites your draft so that it reads more naturally. Then it compares it to your original draft: facts, names, numbers, exact names (such as quoted labels) and the logic of each sentence. Versions that fail to meet these requirements aren't shown. Your original stays next to the result.
The Humanizer takes 50 to 2,000 words in English and up to 1,000 words in the other languages. It does not promise a lower score in any detector.
QuillBot offers a paraphraser and a separate AI humanizer. According to its blog, you can send text from the detector straight to the paraphraser.
Where you can use each tool
Textumi operates in four different places, all using the same account. The web version accepts pasted text, files, and public web pages. Textumi for Chrome checks and rewrites text on any web page from a side panel. Textumi for macOS works by keeping the AI Detector and the Humanizer on a toolbar above your other apps. It only works on Macs that have Apple silicon. The MCP connector lets Claude, ChatGPT and other assistants check and rewrite a text with Textumi inside the conversation.
QuillBot meets you in the browser and on the phone. Its extension for Chrome and Edge includes AI detection, a Safari extension is distributed through the Mac App Store, and its iPhone app offers sentence-level and document-wide AI detection. Its blog also names QuillBot for macOS.
If you write in a browser editor, Textumi for Chrome checks the text you select and can put a rewritten text back into the field you are editing. Textumi has no phone app.
Privacy and history
Textumi stores the submitted texts and their results encrypted. Text detection runs on Textumi's own servers. For rewriting, the text also goes to the external AI model provider named in our privacy policy. On the Individual and Professional plans, your private History keeps requests for 30 days. You can delete requests sooner. A check without an account stores no text.
QuillBot's Chrome Web Store listing says it processes only what is needed to provide suggestions and does not sell your data. For its full rules, read QuillBot's privacy policy.
Who each tool suits
QuillBot suits you if you already write with its paraphraser or grammar checker, if you want AI detection on your iPhone, or if you need a plagiarism check and bulk upload of documents. Its free scans need no account.
Textumi suits you if you want one account for detector and Humanizer with fact checks, a native app on your Mac, or checks and rewrites directly from your AI assistant. It also suits you if you want to check texts in a language outside QuillBot's six (e.g. Polish, Ukrainian), or if you want a plain label with the passages behind it.
Sources and trademarks
출처
- QuillBot blog, article about its AI detector: languages, scans without an account, categories, bulk upload, humanizer and paraphraser. Checked on 20.10.2026.
- QuillBot blog, comparison of AI detectors: words per scan, free scans a day, no sign-up. Checked on 20.10.2026.
- QuillBot extension in the Chrome Web Store: AI detection in the extension, data statement. Checked on 20.10.2026.
- QuillBot iPhone app in the App Store: sentence-level and document-wide AI detection. Checked on 20.10.2026.
QuillBot is a trademark of its owner. Textumi is not affiliated with or endorsed by QuillBot or Learneo. Textumi wrote this comparison about its own product and a competitor from public information.
자주 묻는 질문
Is Textumi an alternative to QuillBot's AI detector?
That's entirely dependent on what you need. Textumi is an alternative for you if you need a detector and Humanizer with a fact check in one account, a macOS app, a connector for your AI assistant, or detection in languages like Polish or Ukrainian. However, if you need a mobile app, bulk uploads or a plagiarism check, then QuillBot provides those options and Textumi does not.
Which detector is more accurate, Textumi or QuillBot?
We do not make that claim. Every company tests on its own texts, and the results are not comparable. Any detector can flag a human-written text and miss AI writing, most often in short, edited or translated texts. The fairest way is to do your own test: pick a few texts whose origin you know, pass them through both tools and compare what you get.
Can I use either tool without an account?
Yes. QuillBot scans texts under 1,200 words without sign-up, and its blog names six free scans a day. Textumi's AI Detector checks texts of 5 to 250 words without an account, up to three times a day, and the Humanizer needs an account.
Does QuillBot's AI detector work in Polish?
Polish is not among the six languages QuillBot's blog names for its AI detector: English, French, Spanish, German, Dutch and Portuguese. Textumi's detector covers Polish and Ukrainian among its 20 languages; the English and Ukrainian detectors have the longest record, and for Polish a longer passage gives a steadier result.
How are QuillBot and Scribbr related?
QuillBot says on its blog that it is a Learneo business, and Scribbr's Spanish detector page says that detector runs on the QuillBot service. Textumi uses its own detector models, built and tuned in-house. We compare Textumi with Scribbr on a separate page.
Written by ChatGPT? Can either tool tell me?
Both are reading the text, not the history. Textumi's detector never names a model, and we have not tested it alone with ChatGPT, so no claim about any model is made. A label or a percentage is an estimate from style, it's not proof of authorship, whichever tool shows it.