How does UnTXT work?

UnTXT checks your writing for AI patterns and tells you why. This is the whole of it, from signing in to reading the result. It takes about five minutes, most of which is waiting.

Step by step

1. Sign in at untxt.uk Use a Google account. There is no separate registration and no card. A new account can check its first 1,000 words for nothing, which is enough to see what the thing does before you decide anything.
2. Pick your role Student, Educator or Professional. It sets the plan you are offered and some of the wording. It does not change how your writing is read, and you can change it later.
3. Paste your writing in An essay, a report, a dissertation chapter, a cover letter. You can also drop a PDF, a Word file or a plain text file straight onto the page. It needs around 250 words, because below that there is not enough for two readers to disagree about.
4. Press Analyse Two AI models read your text separately. Each makes its case about every passage, takes apart what the other said, and gives a verdict without seeing the other one's. Where they still disagree, a third model reads the disputed passage on its own and settles it. Nothing quicker and cheaper runs first, so there is never a second answer to mistake for the real one.
5. Read the marks While you wait, your own sentences drift past on the loading screen. Then the text comes back marked. Grey is FLAGGED: both readers found the passage is built the way a model tends to build one. Gold is AUTHENTIC: both found it sounds like one particular person, and those are the passages to protect when you start cutting. Click any mark and a note says what was noticed. Nothing offers to rewrite the sentence for you, because handing somebody a replacement is quietly writing their work for them.
6. Keep it Every run is saved to your Documents under a title taken from its opening words, with the date, the word count and what it cost. Educator and Professional accounts can download a dated A4 PDF from the result, or from Documents later when somebody asks for one.

What a mark does and does not mean

A mark describes the sentence. It says nothing about the person. People follow the same patterns models do, most of all when they write formally, carefully or in a second language, so a grey passage is somewhere to look and not a finding. If you read the reason and the passage still says what you meant, leave it alone.

Or leave it overnight

Between five in the evening and midnight your time, a second button beside Analyse queues the same reading to run while you sleep, for about 40% fewer credits. It comes back to your Documents within eight hours and never sooner than three, with one email when it lands. A stack of essays queued after dinner is ready by breakfast, and nobody has to sit and watch it.

What counts as an AI pattern

Eleven kinds, roughly. We built a small check for each one, and the browser extension's free trial still runs them one by one. The full analysis is not tied to this list, but it is a fair picture of what gets noticed. Every pattern on it turns up in human writing too.

What it costs

Usage is counted in a credit called CVT. An analysis of about 1,100 words comes to roughly 55 CVT, and the exact figure is shown before you confirm. A monthly plan brings an allowance each month, and anything past it is metered and billed at month end up to a fair-usage cap, so you are never stopped halfway through a document. One-off credit packs are for organisations of three or more. Your first 1,000 words cost nothing.

Invite a friend

Your account comes with a referral link, in the account menu. When somebody joins through it they get 10 CVT straight away, you get your 10 once they come back on another day, and if they later subscribe you get 90 more. Nobody has to buy anything for the first part.

If you are reading somebody else's work

The marks mean the same on a student's essay as on your own. Grey says a passage follows the patterns machine writing does, and careful formal writing earns it too. Gold says it sounds like one particular person. Neither says who wrote it, so use them to start the conversation, and read the reason behind each mark before you read anything into it.