Textumi's AI Detector highlights the passages that sound machine-written. The Humanizer rewrites them in natural, everyday language. Each rewrite is checked against your original, and one that changes a fact, a name or a number is never shown. Textumi works on the web, in Chrome, on your Mac and in your AI assistant.
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Paste a draft or try the sample. Choose AI Detector to see the signal and the passages behind it, or Humanizer for a natural rewrite. You continue in the workspace, and the draft is kept in this tab while you sign in.
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Two tools, one workspace
AI Detector estimates whether a person or AI wrote the text and marks the passages behind the result. Humanizer rewrites a draft in a more natural voice and shows the result beside your original.
The detector reads the whole text, places it on a five-band gauge from human-written to AI-generated and marks the longer passages behind the result, so you can read them in context.
Explore AI DetectorHumanizer rewrites 50 to 2,000 words so they read naturally. Each draft is checked against your original, and a draft that changes the meaning is not shown.
Explore HumanizerUp to 2,000 words in one Humanizer request and 12,000 characters in one detector check.
Paste it, or import a DOCX, PDF, ODT, RTF, TXT or MD file, a web page or a photo of text.
My style makes rewrites follow your own writing, on Individual and Professional. How My style works
Your requests are kept for 30 days on every paid plan, and you can delete them sooner. Plans and allowances
The AI Detector reads your whole text and tells you where it lands on a five-step scale from “Human-written” to “AI-generated”. It also points out the passages that weighed most, so you know what to edit. We built the detector ourselves, and we train and tune its models.
The Humanizer removes stiff, formulaic wording and breaks the even rhythm that makes a text seem generated. Before you see a word of it, Textumi checks the rewrite against your original: facts, names, numbers, quoted terms and logic. A draft that changes your meaning is never shown.
You can use both tools wherever you write: in the web workspace, in the Chrome extension, in Textumi for macOS, which sits above your other windows, or in Claude, ChatGPT and other assistants that support MCP.
Every paid plan includes the Mac app and a private 30-day History. My style, on Individual and Professional, teaches the Humanizer to write the way you do. The Pricing page shows what each plan includes.
From draft to result
Paste a complete passage of at least 5 words. A longer passage gives a more reliable result.
Open the passage view to see where model signals agree or differ. The gauge names who likely wrote the text in five bands; it does not measure what share of it AI wrote.
Humanizer rewrites your text, preserving its language and tone. Facts and meaning are checked before a draft is shown.
Your original stays beside the rewritten draft. Read them together, then copy the result. Paid plans also keep it in History.
A drawing of the workspace.
The two tools answer different questions. The detector shows which parts of a text resemble machine writing, and that is usually where a text sounds formulaic. The Humanizer suggests how to rewrite those parts.
Your original stays next to the result, and you decide what to keep. Neither tool makes decisions for you.
A detector result is a signal about your text, not proof of authorship, and it can be wrong in both directions. We make no promise about a score in any detector, including our own. What we aim for is text that sounds like you on a good day.
Humanizer
Drag the slider and watch the stiff draft turn into a plainer one, word by word. Names, numbers and dates stay the same.
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An example written for this page. Textumi makes no promise that a rewritten text will receive a low score from any detector.
What the gauge means
The detector reads the whole text and places it on a gauge of five bands, without a number. Move the needle to see how Textumi words each band.
The style reads like a person's writing. It is still an estimate: AI text can be missed, most often when it is short, edited or translated.
The line is fixed before a detector is tested, at the point where at most two in a hundred human texts it has not learned from are flagged. “Mostly human” lies just below it, “Mixed: human and AI” just above. Both deserve the most careful reading.
The wording closely resembles AI writing, so read the marked passages. It is not proof of who wrote the text, and human writing can be flagged.
Guides
What an AI detector result can and cannot support, how to review flagged work fairly, where detectors go wrong, and how to check a text in Textumi.
Read the guide
Check your essay or paper with an AI checker before you submit: why honest writing gets flagged, how to keep a record of your process and what to do if asked.
Read the guide
A practical checklist for making AI text sound natural: fix the even rhythm, stock transitions, lists of three, hedging and empty openers. With examples.
Read the guide
AI detectors sometimes flag text a person wrote. Why false positives happen, whose writing is flagged more often and what to do if a result is used against you.
Read the guide
AI detectors judge wording, not authorship. What they measure, why edited text, new models and other languages trip them up, and how to read a result sensibly.
Read the guide
How Textumi's AI detector is built: one classifier per language, human and AI training texts, a sealed test, the threshold rule and the five result labels.
Read the guideWhere you can use it
Your text on the left, the result on the right. Works in any modern browser, on a computer or a phone.
Open workspace
A toolbar above your other apps: select text anywhere and press a shortcut, open a file or capture the screen. Part of every paid plan.
Desktop appsA side panel on any web page: check selected text or the whole page, rewrite text in place, or scan a whole site. Works with your plan and allowance.
Available in the Chrome Web Store
MCP connects Textumi to your own AI assistant, such as Claude or ChatGPT: you ask the assistant, and it checks or rewrites the text with Textumi.
How Textumi works with AI assistantsDetection is done by Textumi's own models, so a text you check is not sent to an outside AI provider. Submitted texts and results are stored encrypted.
A rewrite also uses an external AI model, whose provider is named in the privacy policy. Read it before you submit anything confidential.
On every paid plan, requests are kept in History for 30 days, and you can delete them sooner. On the Free plan a result stays open for about an hour and is deleted within 7 days. It is encrypted the whole time, and Textumi's administrators can open it only for support and abuse prevention.
Textumi does not sell your texts or use them to retrain its detector automatically. The site carries no advertising. Analytics can be turned off at any time in Cookie settings, and in the EU, the UK and Switzerland it runs only if you agree to it in the cookie banner.
The AI Detector and the Humanizer work in the same 20 languages. Each language has its own detector, trained and tuned by Textumi, and longer texts of ordinary prose give the most reliable result.
Under 50 words, the detector shows “Too little text to judge” instead of a label in any language. The Humanizer accepts up to 2,000 words in English and up to 1,000 in the other languages, where a word counts as two against your allowance.
Good to know
There are three paid plans. Starter is the entry plan, with words for the website, the Mac app and your own AI assistant, and a 30-day History. Individual suits regular writing and adds My style, and Professional suits large volumes, with priority in the queue and more requests at once. Annual billing costs 20 to 25% less than twelve monthly payments. Current prices and allowances are on the Pricing page.
One of five labels for the likely author, from “Human-written” to “AI-generated”, and the passages behind it. “Mostly AI” or “AI-generated” is a reason to reread the marked passages carefully. Every label, “Human-written” included, is an estimate from the style of the text, not a probability and not proof of authorship.
Textumi does not promise that. The Humanizer makes a text more natural and keeps its meaning, but another detector may still flag the result. Before you use a rewrite, compare it with your original and follow the rules of the place you write for.
English, Ukrainian, Spanish, Portuguese, German, French, Italian, Polish, Dutch, Turkish, Romanian, Swedish, Arabic, Hindi, Indonesian, Vietnamese, Korean, Hebrew, Norwegian Bokmål and Danish, for both tools. Textumi recognizes the language of your text itself, or you can choose it.
Yes, for macOS. It keeps the AI Detector and the Humanizer on a toolbar above your other apps and works with text you select in any app, with files and with the screen. It uses your Textumi account and allowance, is part of every paid plan and needs macOS 14 or later on a Mac with Apple silicon.
Yes. A connector based on the Model Context Protocol (MCP) links Textumi to Claude, ChatGPT or another assistant that supports MCP. The assistant then checks and rewrites text with Textumi right in the conversation. Through an assistant the Humanizer works with English texts, and the assistant itself reviews the drafts. This is part of the Starter, Individual and Professional plans.
Paste a text and see the signal with the marked passages, or get a natural rewrite beside your original.
