# Check text for AI. Human or machine?

> Free check of a text for signs of AI: highlights of doubtful spots and hints on making the text livelier. RU, UK, PT, EN. The text is not stored.

- URL: https://authortext.com/en/
- Language: en
- Site: AuthorText (https://authortext.com/)

A statistical look at rhythm, vocabulary and typography. We show where exactly the text looks templated instead of passing a verdict on authorship.

## How the check works

- **Paste your text.** Paste text, upload a file (PDF, DOCX, TXT and more) or give a link to a page. The limit depends on your plan and is shown under the editor.
- **Several kinds of analysis.** Sentence and paragraph rhythm, AI phrases, connectives, vocabulary, typography and hidden characters.
- **Edit with hints.** Every signal is tied to a place in the text and explained. No black box, no verdicts.

## Who AuthorText is for

- **Authors and copywriters.** Find templated phrasing and even rhythm in a draft before you publish.
- **Editors.** Quickly see where a text sounds like a template and what to change there.
- **Students and teachers.** See which places look templated. Remember: the score is a hint, not proof.
- **Developers.** Connect the check to your own service through the HTTP API.

## Why you can trust it

- **A hint, not a verdict.** The score shows how many AI-like signals were found, not the probability of authorship. People also write evenly and in templates.
- **Texts are not stored.** Your text goes to the server only to be analysed. We do not keep texts or write them to logs; statistics are counters only.
- **Honest about the limits.** The thresholds are provisional and not yet calibrated. On short texts and in untested genres the site holds back a verdict.

## Frequently asked questions

### How is the score calculated?

We measure statistical features: spread of sentence and paragraph length, AI phrases, connectives, vocabulary, typography and hidden characters, and combine them into one number from 0 to 100. Every feature is visible on its own.

### Can the score prove that AI wrote a text?

No. The score is a hint about style, not proof of authorship. A human author can write evenly too, and a text edited by a person can look natural.

### Do you store my text?

No. The text is sent to the server only for analysis and is not kept. Statistics hold counters only: no texts and no addresses.

### Which languages are supported?

Russian, Ukrainian, English and Portuguese. In other languages the result may be inaccurate.

### What are the limits?

Text length and the set of analyses depend on your plan: your limit is shown under the editor. Details are on the plans page.

The check itself runs in the browser page; an API for programs is described at https://authortext.com/en/developers.

## Links

- [Home](https://authortext.com/en/index.md)
- [plans](https://authortext.com/en/plans.md)
- [help](https://authortext.com/en/help.md)
- [developers](https://authortext.com/en/developers.md)
- [about](https://authortext.com/en/about.md)
- [method](https://authortext.com/en/method.md)
- [faq](https://authortext.com/en/faq.md)
- [privacy](https://authortext.com/en/privacy.md)
- [terms](https://authortext.com/en/terms.md)
- [articles](https://authortext.com/en/articles/index.md)