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First rewrite free · GPTZero score shown · No card

Undetectable AI Rewriter
that shows its GPTZero score

Paste text from ChatGPT, Claude or Gemini. HumanGPT rewrites the rhythm and structure that detectors look for, checks the rewrite with GPTZero, and shows you the score before you use it. If a rewrite still reads as AI, you see that too. Your first rewrite is free: up to 300 words without an account, or 500 with a free one.

4 of 6passed GPTZero100%median AI before18%median AI after
Rewrite My Text FreeNo card · Score on every result
§01 What the rewriter does

Rewrite first. Then prove it.

Most rewriters stop at the rewrite and leave you to guess. The whole point of this one is the second half: a real detector reads the result before you do.

✦

Rewrites, not synonym swaps

Detectors score how predictable each next word is and how much your sentence lengths vary. The rewriter changes both, which is why a thesaurus pass still gets flagged and this does not.

◎

Checked with GPTZero

The rewrite is scored by GPTZero before it reaches you, and the result shows that score. On a day the check budget runs out, the result says it was not checked.

⟂

Best of several drafts

The engine writes several candidate rewrites, throws out any that drift too far from your meaning or length, and checks the most promising ones. You get the one that scored best.

⛨

Honest when it fails

Some texts resist, often short lists and very formal paragraphs. When every candidate still reads as AI, the result tells you so instead of showing a green badge it did not earn.

→

Any model's text

ChatGPT, Claude, Gemini, DeepSeek, Perplexity or a local model. Detectors look for the same patterns in all of them, so the rewriter treats them the same way.

★

Keeps your language

Spanish stays Spanish, French stays French. Pick the language in the tool and the rewrite comes back in it. Detectors are harder to pass outside English, and the score on the result shows it.

§02 How it works

Four steps. One score to read.

01

Paste the AI text

From ChatGPT, Claude, Gemini or anything else. Up to 300 words for a free rewrite without an account.

02

Choose strength and purpose

Light, Medium or Heavy, and what the text is for: essay, email, article, cover letter.

03

Rewrite

Several candidates are written and the most promising are checked with GPTZero.

04

Read the score, then the text

Check names, numbers and facts against your original, fix anything that moved, then copy.

§03 Our test, every number

4 of 6 passed. Here are all 6.

On 23 October 2026 we asked ChatGPT (GPT-5.5) for 6 everyday texts, scored each one on GPTZero, rewrote it with HumanGPT's Pro engine and scored the result again. Under 50% means GPTZero leans human. Nothing was retried by hand or left out, the failures included.

Essay paragraph (history)17% AI
141 to 97 wordswas 100% AI · pass
Cover letter paragraph0% AI
114 to 56 wordswas 100% AI · pass
Blog intro (fitness)1% AI
137 to 216 wordswas 100% AI · pass
Work email to a client100% AI
123 to 100 wordswas 100% AI · still flagged
LinkedIn post19% AI
122 to 192 wordswas 100% AI · pass
Product review73% AI
121 to 124 wordswas 100% AI · still flagged

The catch, stated plainly: rewrites change a lot of wording and sometimes the length, and in a few of these samples a detail from the original went missing. Read the result and put back any name, number or fact that matters. A score tells you how a detector reads the text, not whether every sentence still says what you meant.

§04 Rewriter or paraphraser

Why a paraphraser still gets flagged

Detectors do not read for meaning. They read how predictable the text is, word by word, and how evenly that is spread. Swapping words leaves both almost untouched.

FeatureHumanGPT rewriterTypical paraphraser
What it changes Sentence structure and rhythm Individual words, structure kept
Detector score GPTZero score on every result None, or a separate paid tool
When it fails Says so on the result Shows the text as if it passed
Free to try First rewrite free, no card Often an account or a card first
Other languages Rewrites in the language you paste Often English only
Meaning Mostly kept. Read before you use it Closer to the original wording
§05 Questions people actually ask

Frequently Asked Questions

What is an undetectable AI rewriter?
It is a tool that rewrites text written by ChatGPT, Claude, Gemini or another model so that AI detectors read it as human. A good one changes the rhythm and structure of the sentences, which is what detectors measure, instead of swapping words for synonyms. HumanGPT goes one step further and checks the rewrite with GPTZero, so you see the score instead of trusting a promise.
Is the HumanGPT AI rewriter free?
Your first rewrite is free: up to 300 words without an account, or up to 500 with a free account. After that you can try Pro for 7 days for $4.99, then it is $19 a month for 50,000 words, or $9 a month billed yearly. No card is needed for the free rewrite.
Does the rewritten text pass GPTZero?
Usually, and you do not have to take our word for it. In our test on 23 October 2026, 6 texts written by ChatGPT all started at or near a 100% AI score, and 4 of the 6 rewrites came back under 50% on GPTZero. The rest are shown in the table on this page. Every rewrite you make shows its own score, so you know before you use it.
Can an AI rewriter bypass Turnitin?
Nobody can honestly promise that. Turnitin has no public detector to test against and its model changes over time, so any exact Turnitin pass rate you see is a guess. We check against GPTZero because it can be measured. Whether you may use a rewriter at all depends on your school or employer.
Will the rewrite keep my meaning?
Mostly, but read it before you use it. To change how a detector reads the text, the rewrite changes a lot of wording and sometimes the length. In our test some rewrites dropped a detail from the original, such as a name or a tool. Check names, numbers and facts, and put back anything that matters.
What is the difference between a rewriter and a paraphraser?
A paraphraser swaps words and keeps your sentence structure, so detectors still flag it. A rewriter built for detection changes the structure: sentence length, rhythm and how predictable each next word is. That is the part detectors actually score.
Does it work in Spanish and other languages?
Yes. Text you paste in Spanish, French, German or another supported language is rewritten in that language, not translated into English. Choose the language in the tool before you rewrite. Be aware that detectors are much harder to pass outside English: in our Spanish test on the same day, only 1 of 15 ChatGPT texts came back under 50% AI. The score on the result tells you where yours stands.
Is it allowed to use an AI rewriter?
It depends on the rules where you submit the work. Many schools allow AI for editing and restrict it for writing, and employers vary. A rewriter changes how text reads, not who is responsible for it. Check the rule that applies to you first.
§06 Keep reading
AI to Human Text Converter

Real ChatGPT samples, before and after, with their scores.

Free AI Detector

Check any text, yours included, before you hand it in.

Rewriter tools for SEO blogs

Our roundup of the rewriter tools bloggers use.

Do humanizers beat GPTZero?

55 paragraphs tested, failures included.

"A rewriter that hides its score is asking you to trust it. This one shows you the number."

Rewrite My Text Free

First rewrite free · No card · GPTZero score shown