Three rewrite strengths
Light, Balanced and Aggressive, with six styles and six purposes, so the rewrite fits the text.
免费试用 500 词,无需注册。
You have a draft written with AI, and Grammarly AI Detector flags it. Here is how to rewrite it so it reads like you, then check it.
Grammarly describes its AI detector as a checker trained to identify AI-generated text, with a score showing how much of a piece appears AI-written. Grammarly says paraphrasing done by LLMs, including its own rewriting agents, should still register as partly AI-generated. It claims 99% detection accuracy, though it says no AI detector is 100% accurate.
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.
Grammarly says lightly edited AI-generated text may evade detection, while paraphrasing done by LLMs, including its own Paraphraser and Humanizer agents, should still register some AI-generated text.
What Grammarly AI Detector says about itself on its own pages. We have not measured Grammarly AI Detector yet; our measured results are on the ZeroGPT page.
| Question | What Grammarly AI Detector says |
|---|---|
| Free use | A free web scan by pasting text or uploading a file |
| Paid plans | In-product AI detection is a paid feature on Pro, Plus, Business and Education plans |
| Accuracy it claims | 99% detection accuracy and a #1 ranking on RAID's independent benchmark |
| Humanized text | Says lightly edited AI text may evade detection; rewrites from its own Paraphraser and Humanizer will likely be flagged |
| Models it names | ChatGPT, Gemini, Claude, Microsoft Copilot and more |
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 Grammarly AI Detector 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 Grammarly AI Detector 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.
It is Grammarly's AI checker, which shows a score for how much of a text appears to be AI-written. Grammarly, whose site footer reads Superhuman Platform, also offers an AI Humanizer, a Paraphrasing Tool and an AI Rewriter.
Grammarly says lightly edited AI text may evade detection, but that paraphrasing by LLM-based tools, including its own Paraphraser and Humanizer agents, will likely still be flagged in part. We have not tested the Grammarly AI Detector ourselves.
Grammarly claims 99% detection accuracy and a #1 ranking on RAID's benchmark, but says no AI detector is 100% accurate and human text can be flagged. Its pages describe the training data differently: tens of thousands of texts from before 2021 on the detector page, and hundreds of thousands in the help center.
The web page offers a free scan. Inside Grammarly's products, including its desktop apps and Google Docs extension, AI detection is a paid feature on Pro, Plus, Business and Education plans.
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.
Grammarly AI Detector details checked on October 22, 2026 from: Grammarly AI detector, Grammarly AI Detector user guide, Grammarly plans. RewriteMax is not affiliated with Grammarly AI Detector or Grammarly (Superhuman Platform).