What is UnTXT?
TL;DR
UnTXT checks your writing for AI patterns and tells you why. You paste in an essay, a report or an application. The parts that sound machine-made come back marked in grey with the reason beside them, and the parts that sound like you come back in gold. There is no percentage and nothing is rewritten. The first 1,000 words are free, and after that a monthly plan starts at £8.40, tax included. Sataklela OÜ builds and runs it at
untxt.uk.
What does an AI pattern checker do?
A spell checker finds the words you got wrong. An AI pattern checker finds the sentences built the way a model builds them, tells you which habit it spotted, and leaves the rest to you.
Those patterns are things like a conclusion that admits a limitation and then looks ahead, three items where two would do, or a paragraph in which every sentence is the same length. Models produce them constantly. So do people, particularly people writing formally, carefully, or in a second language. That is why a mark here is about the sentence and never about the person: it says how a passage reads, and it can't say who wrote it.
The other half matters as much. Passages that sound like one particular person get marked too, in gold, so you can see what to keep.
How it works, step by step
- Sign in at untxt.uk with a Google account. No card is asked for.
- Pick your role: Student, Educator or Professional. It sets the plan and the wording you see.
- Paste your writing, or drop in a PDF or a Word file. It wants about 250 words to work with.
- Press Analyse. Two AI models read each passage separately and argue it out, and a third settles what they can't agree on. It takes a few minutes.
- Read the marks. Grey is FLAGGED and gold is AUTHENTIC. Click either and the reasoning opens beside it.
- Keep it. Every analysis is saved to your Documents. Educator and Professional accounts can download a PDF.
What it will not do
- Tell you who wrote something. Nobody can read that off a page, and we would rather say so than pretend.
- Give you a percentage. A number is something to argue about. A marked passage is something you can read. More on that at Why percentage scores fail.
- Rewrite your work. There is no button here that hands back a cleaner draft, and there is not going to be one.
- Check for plagiarism. It does not compare your text against anybody else's.
What counts as an AI pattern
Eleven kinds, roughly. We built a small check for each, 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 one of these turns up in human writing as well, so finding one describes the prose and proves nothing about how it was produced.
Pricing
- Free: your first 1,000 words, plus one complimentary analysis run. No card.
- Monthly plans, tax included: Student £8.40, Educator £13.20, Professional £15.60, with prices set in your own currency when you subscribe and fixed there afterwards. Each plan carries a monthly allowance of credit (CVT).
- What a run costs: an analysis of about 1,100 words is roughly 55 CVT, or about 32 if you let it run overnight. The exact figure is shown before you confirm.
- If you go over: the extra is metered and billed at month end, up to a fair-usage cap, so you are never stopped halfway through a document.
- Organisations: schools, agencies and teams buy seats with a shared pool of credit. How that works.
Who uses it
- Students check a draft before handing it in, to see which paragraphs sound machine-made and which sound like them.
- Educators see how a submission reads before they talk to the student, with the reason behind every mark, and keep a PDF if they need a record.
- Professionals check a report, a proposal or a cover letter before it goes out.
Try it on your first 1,000 words, free
Questions we get asked
- Is UnTXT an AI detector?
- It gets filed with them, and it is not quite one. A detector gives somebody else a verdict about you. UnTXT gives you the passages and the reasons, and makes no claim about who wrote anything.
- Does it catch all AI writing?
- No, and nothing does. It marks passages that follow AI patterns, and plenty of human writing follows them too. Treat a mark as somewhere to look.
- Does it check for plagiarism?
- No. It does not compare your text against a database of other people's.
- Can a result be used in a formal or legal process?
- UnTXT is provided for information. Sataklela OÜ makes no representations about legal admissibility, and whether a result may be cited in a university process depends on that university.
- Is it only for academic writing?
- No. Reports, proposals, job applications and client documents go through the same check.
- Can I share my credit with somebody?
- Yes. Unused CVT can be gifted to any other registered account by email address. Gifted credit cannot be passed on a second time.
- Is using it allowed under my university's AI policy?
- UnTXT generates nothing, which is what most policies are written about, but policies differ and yours is the one that counts. We have written up what several UK universities publish, with sources, starting at Loughborough, UCL and Imperial. Our advice everywhere is to say you used it.
- Who makes UnTXT?
- UnTXT is a trademark of Sataklela OÜ (registration pending) and is part of the CVaaS family at untxt.uk.