Claude AI rewriter
Watch it rewrite a Claude draft.
Most tools in this category ask you to trust a claim. This one shows you the paragraph: which lines give the model away, what replaces them, and what stays exactly where it was.
No account needed for the demo.
Before and after
The same paragraph, rewritten
Tinted red: the phrasing a reader recognises as a model. Tinted green: what came back instead. The claim in the sentence does not move.
1,000 Humanizer words free after sign-in.
What happens to a paragraph
The part worth understanding is that it does not rewrite once and hand you the result. It marks its own work, and it is allowed to give up.
-
01
It writes several versions, not one
For each paragraph the rewriter produces a number of different attempts rather than a single pass, which is what a chatbot gives you.
-
02
About a dozen checks decide what survives
Meaning changed, cut off mid-sentence, leaked model chatter, turned into a bulleted list where the original was prose, or carrying any of roughly fifty banned AI clichés: all rejected automatically, and it tries again differently.
-
03
If nothing passes, you keep your draft
Every accepted change has passed those checks. When no version does, you get your original back rather than a confident-sounding substitute.
-
04
Your facts are held out of it
Names and figures are swapped for placeholders before the rewrite and restored after, so the real ones are never part of what gets rewritten. If a figure comes back altered, that paragraph is discarded and your original kept.
Why not just ask a chatbot to rewrite it
You can, and for a single paragraph you probably should. The difference is what happens after the rewrite is produced.
| Measure | TheChecker.AI | Asking a chatbot |
|---|---|---|
| Attempts per paragraph | Several, then the best is chosen | One |
| Rejects a bad rewrite | About a dozen automatic checks | No |
| If nothing improves | You get your original back | You get the rewrite anyway |
| Protects names and figures | Held out and restored afterwards | No |
| Re-marks your text as AI | No | Yes, that is how marked text is produced |
The questions worth answering
Writing you are entitled to send that happens to read like a model: reports, proposals, marketing copy, client-facing email, and drafts written in a second language that came back fluent but not yours. It is not for passing off work in a setting where using a model is not allowed. If you are somewhere a model is not permitted, rewriting the output does not change that, it only makes the problem harder to see.
No, and we won't claim otherwise. It is an editor for readability and voice, and it makes no claim about how Turnitin, GPTZero, Originality.ai or any other detector will read the result. No rewriting service can promise you a third party's verdict.
It is the likelihood that writing reads as machine-made, 0 to 100%. Below 35% is clear, 35% to 70% is flagged, above 70% is strongly machine-like. It is a probability, not a verdict. Short paragraphs are the known weak spot: news-style and punchy marketing copy score far too high, and genuinely human-written news articles have scored around 99%. False positives are possible and we have seen them, and the scores are not calibrated. Never use this as sole evidence in a decision about a person.
It keeps your claims, your figures, your names and the structure of the argument. It changes sentence rhythm, hedging, and the phrasing a reader recognises as AI. Tone is the hard part and the one we measure ourselves weakest on, so the formality of your source is identified first and the rewrite is held inside it. An academic paragraph should not come back sounding like a TED talk.
Formal and academic writing. Tone drift is the known risk there, which is why the formality of your source is identified first and the rewrite is held inside it. Read the result closely.
Yes. Detection covers 40+ models, and the rewriter works on AI-assisted writing from any of them, plus text written before any of this existed. The tool is named for Claude because that is what most people arrive holding.
The demo is free and needs no account. After that it is $9.90 a month or $99 a year for the same plan billed differently: unlimited detections, 5,000 Humanizer words a month, uploads, priority support and exportable reports on both. Run out of words and you can buy more without changing plan.
Yes. The text you submit and the rewritten result are saved, including free demo runs, and with an account they appear in your history so you can reopen them. It is never used for training, and never sold or shared. Detection runs inside our own service, so scored text does not go to an outside company at all, and data is encrypted in transit and at rest. The service is operated by Girema Holdings Limited, registered in Limassol, Cyprus, so it sits under EU data protection law. Full detail in our privacy policy.
Run it on something you actually wrote.
The demo takes a paragraph and needs no account. If the result is not better than what you pasted, you will see that too.
1,000 Humanizer words after sign-in · then $9.90/mo for 5,000 a month
No account for the demo. Word credits, not a subscription trap.
Rewrite a paragraph free