Three rewrite strengths
Light, Balanced and Aggressive, with six styles and six purposes, so the rewrite fits the text.
Free trial: 500 words. No sign-up needed.
You have a draft written with AI, and Monica flags it. Here is how to rewrite it so it reads like you, then check it.
Monica describes its AI Detector as an online tool that analyzes text with several detection models to tell whether it is AI-generated. Monica's result combines three separate detectors, GPTZero, Copyleaks and ZeroGPT. The same page also sells a humanizer it says turns AI text into text that “scores as 98% human”.
RewriteMax rewrites how the whole text is written, its rhythm, structure and phrasing, instead of swapping single words, and leaves the decisions about meaning with you.
Monica does not say on its own pages whether it detects paraphrased or humanized text.
What Monica says about itself on its own pages. We have not measured Monica yet; our measured results are on the ZeroGPT page.
| Question | What Monica says |
|---|---|
| How it works | Runs three detection models: GPTZero, Copyleaks and ZeroGPT |
| Free use | A free quota and trial credits for new users; the input box takes 250 words |
| Paid plans | Sitewide Pro, Max and Ultra plans at US$99, US$199 and US$995 a year |
| Accuracy it claims | 98%, which it attributes to combining three detectors; no method given |
| Models it names | GPT, GPT-3.5, GPT-4, Claude, Gemini and LLaMa, among “over 8” models |
| Languages | Trained for English, Spanish and other widely used languages |
Light, Balanced and Aggressive, with six styles and six purposes, so the rewrite fits the text.
Check the rewrite on the same page; the detector uses ZeroGPT’s detection API.
Lock up to 20 names, terms or phrases, and keep quotes exactly as written.
We publish the method and results of our tests instead of a success-rate table.
A flag from Monica can cost you time and credibility, even when the writing is yours.
Detectors misread human writing too; a 2023 study found seven detectors flagged non-native English essays as AI 61% of the time on average.
Turn a generic AI draft into writing that sounds like you and says what you mean.
Rewrite a whole draft in one pass instead of editing it sentence by sentence.
Check a rewrite before a client, editor or platform runs Monica on it.
Detectors change often; a full rewrite does not rely on one detector’s current blind spots.
Use it where AI-assisted writing is allowed, and disclose AI help when required.
Rewrite AI-assisted drafts where your course allows it, and keep your drafts as a record.
Turn AI drafts into articles that read naturally and add real expertise.
Deliver copy you have reviewed line by line before a client checks it.
Keep a consistent, personal voice across AI-assisted posts.
Rewrite AI copy into your brand’s style and tone.
Keep terminology, hedges and citations exact while the phrasing becomes yours.
Make AI-assisted emails and reports direct and personal.
Make captions and posts sound like a person, not a template.
Monica's AI Detector is a tool from Butterfly Effect Pte. Ltd. that checks text with several AI detection models. Monica also offers an AI text humanizer and a rewriter.
Monica does not say whether its detector catches paraphrased or humanized text; the same page markets its humanizer for making AI text undetectable. We have not tested Monica ourselves.
Monica claims detection accuracy as high as 98% and ties that figure to combining GPTZero, Copyleaks and ZeroGPT. It does not describe how the figure was measured.
Monica says it integrates three AI detection models: GPTZero, Copyleaks and ZeroGPT.
It should read more naturally, not less. Any automated rewrite can change wording or details, so compare it with your draft before you use it.
Essays, articles, blog posts, emails, reports and social posts each have a purpose setting, with six styles from academic to persuasive.
Yes. You can humanize up to 500 words free without an account, and the AI Detector is part of the same trial.
Monica details checked on October 22, 2026 from: Monica AI detector, Monica pricing. RewriteMax is not affiliated with Monica or Butterfly Effect Pte. Ltd..