Undetected.ai

Humanize AI text · AI text humanizer

AI text humanizer for writing that has to read like a person

A text humanizer earns its name when the result reads differently, not when it swaps a few words for synonyms. Swapped words leave the sentence lengths, the transitions and the overall shape of the text exactly where they were.

0 / 200 words

That is more than 200 words, which is what a run without an account takes at once. Trim it, or it will stop at the limit on the next page.

No sign-up to see your result. 2 free runs a day, up to 200 words each.

Undetected.ai works on that shape. It varies sentence length, breaks up repeated transitions and loosens stiff phrasing, while your meaning, quotes and numbers stay as written. Our own AI-pattern score, measured before and after, shows how far the text moved.

Meaning kept · Your own text rewritten · Saved to your history, delete any time

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Our own score before and after

Your text meaning intact

Why it works

What you get when you humanize AI text

Sentence rhythm first

Length, cadence and clause order are varied the way a person varies them, which is the part a plain synonym swap never touches.

Transitions that do not repeat

Stock connectors and openers that appear paragraph after paragraph are replaced with phrasing that fits the point being made.

Facts left alone

Names, figures and quoted material pass through unchanged, so you edit for voice and not for accuracy afterwards.

What it handles

Natural prose, with the proof on screen

You paste the text and pick a tone. Undetected.ai rewrites the robotic patterns, keeps your meaning, and shows our AI-pattern score before and after.

  • Varies sentence length and cadence
  • Replaces repeated transitions
  • Keeps names, figures and quotes
  • Choice of tone for the output
  • Our AI-pattern score, before and after
AI TEXT HUMANIZER Human

Before, flagged as AI

Moreover, it is important to note that this approach delivers a significant impact across the board.

Humanized

This approach actually moves the needle, and you feel the difference right away.

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Why Undetected.ai

Readable output, and the measurement in view

Not word-salad that beats one scanner and reads worse. Natural prose that keeps your meaning, rebuilt sentence by sentence.

Our AI-pattern score, before and after

Four measured signals (sentence rhythm, template phrases, vocabulary variety and passive voice) scored on your draft and on the rewrite, with the reasons behind each number. It is our own measure, not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT reading, and we have no access to those services.

See the score change

The gauge animates from our AI-pattern score for your original to the score for the rewrite, with the reasons behind both numbers.

Keeps your meaning

Your facts, argument, and structure stay intact. Undetected.ai rewrites the robotic rhythm, not your point, so the output is publishable as is.

Good questions

Questions about ai text humanizer

No. A paraphraser mostly changes vocabulary. A text humanizer changes how the text moves: sentence length, transitions and phrasing. That is why a paraphrased draft can still read as machine made.
Yes. Paste writing from ChatGPT, Claude, Gemini or any other source, pick a tone and run it. The rewrite works on the text itself, whatever produced it.

Explore more

More ways to humanize AI text

Further reading: AI to human text converter, what it changes · An AI text rewriter that protects your facts · How to make AI writing sound human: 9 edits that work · Features

Make this draft read like you wrote it

Paste your own text and watch our AI-pattern gauge move from the score on your draft to the score on the rewrite, meaning kept intact.

Meaning kept · Your own text rewritten · Saved to your history, delete any time

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