Writing & AI tools / Undetectable AI

Undetectable AI

Undetectable AI is a tool that rewrites AI-generated text to read like human writing. It helps students, content writers and professionals. Free to start.

Visit undetectable.ai

No free planSignup unclearFile handling unclearWebsite health 4.8 / 5

Where it stands

4.1 / 5

Signals score

Not a hands-on test

Based on 2 of 3 signals

Website health4.8 / 5 · weight 50%
Measured from the tool's public website
Facts stated4.2 / 5 · weight 30%
How many of the five facts the tool's own pages state

Built only from what we can measure or quote without using the tool. How ranking works

Rank by signals

2 of 8 · AI content detector 2 of 14 · Paraphrasing tool 6 of 73 · Writing & AI tools

We have not run our own hands-on test on Undetectable AI yet. Facts checked 2026-11-01. How tests work

Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.

Should you use Undetectable AI?

A quick read built only from what the tool's own pages state and from our tests, not from opinion. Facts checked 2026-11-01.

A good fit if…

Nothing is clearly stated yet.

Check first

Its pages do not state: signup, watermark. Check on the tool's site before you rely on it.

Does: AI content detector, Paraphrasing tool

Measured signals

4.8 / 5 · measured 2026-11-08

Read automatically from Undetectable AI's public website: how reliable, secure, private and open the site is. This is not a test of how well the tool does its job. How this is measured

Reliability5 / 5The page answered and finished downloading in 193 ms.
Security4.3 / 53 of 5 protective headers set (strict-transport-security, content-security-policy, x-frame-options).
Privacy5 / 5No third-party tracking services found on the page.
Transparency5 / 5Links a privacy policy; links a pricing page.

Community feedback

We found no public discussion of this tool to read.

A score needs at least 12 different commenters across 2 threads.

Free tier: Only a free trial limited to 250 words is described. More use needs a paid plan.
Paid plan: 10K words per month: $9.99 monthly or $5.00 per month billed yearly ($60 per year). 20K words: $19.00 monthly or $9.50 per month yearly ($114). 35K words: $31.00 monthly or $15.75 per month yearly ($189). 50K words: $42.50 monthly or $21.25 per month yearly. Business pricing is custom.
Signup: Not stated.
Watermark: Not stated. The pricing page lists a feature called 'Watermark and future proof' without explaining it.
Where files go: Privacy notice says data may be transferred, stored and processed in other countries, and kept as long as needed for its purposes. It does not describe how entered text is handled, and its server-location line is incomplete.

From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy notice. Prices and limits change; check the tool before you rely on them.

Get an email if Undetectable AI changes

We check its official pages every week. If they change, we tell you, so you can see if the price or limits moved. No other email, and one click stops it.

Alternatives to Undetectable AI

Compare with: DeepL, Originality.ai, Sapling, Smodin, Wordtune

Are you the maker of Undetectable AI? Link to this page

Copy this into your site. The link goes to this page, and it does not change any score.

<a href="https://agathox.com/tools/undetectable-ai">Undetectable AI on agathox: compared and tested</a>

Tasks and scores

AI content detectorNot tested yet
Paraphrasing toolNot tested yet