Stealth AI
PassMe AI · Writing · AI Detection
Stealth AI is an AI humanizer from PassMe AI that rewrites machine-generated text so it reads like a person wrote it and clears detectors such as GPTZero and Turnitin.
About Stealth AI
What Is Stealth AI
Stealth AI is a web tool that takes text written by ChatGPT, Claude, Gemini, or any other model and rewrites it in a more natural voice. It belongs to a category people call AI humanizers, stealth writers, or an undetectable AI writer, depending on who's selling it. The output keeps the meaning of the original draft, and the wording changes enough that detector scores usually drop.
The problem it targets is real for anyone who writes with AI help. Detectors now grade essays, client copy, and applications on how machine-like the phrasing looks, and a false positive can cost a grade or a contract. Stealth AI runs the text through a model trained on large amounts of human writing, then rebuilds sentences with varied rhythm and simpler vocabulary. A built-in detector check sits next to the humanizer, so you see a score before you send the text anywhere.
There are limits worth knowing up front. Every plan caps how many words you can process per request and per month, and the free tier is small at 80 words per request. Detector companies also update their models, so no humanizer can promise a clean pass forever. Stealth AI is a writing and rewriting tool, not a research tool, and it won't improve facts or fix a weak argument.
Getting Started
- Open stealthai.ai, which now loads the PassMe AI stealth writer page, and create a free account with an email address.
- Paste the text you want to rewrite into the input box, or start from one of the sample documents on the site.
- Pick the language and tone you need, then run the humanizer and wait for the rewritten version.
- Run the built-in AI detector on the result to see the human score before you copy it out.
- Copy the output into your document, or upgrade to a paid plan when you hit the word cap for the month.
Product Information
A quick look at Stealth AI's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Students writing essays with AI assistance
- Freelance writers and copywriters
- Non-native English speakers
Tasks
- Humanizing an AI first draft
- Cleaning up translated content
- Checking text before submission
Scenarios
- Finishing a client deliverable the night before a deadline
- Rewriting routine business emails and reports
- Preparing marketing copy for review
Key features
AI Text Humanizer
The core tool rewrites machine text sentence by sentence, varying rhythm and swapping repeated phrasing for plain words, which is how most people humanize AI text without editing every line by hand. PassMe AI says the model behind it was trained on tens of millions of writing samples. You get an output that keeps your points but loses the flat, even tone that detectors flag.
Detector Bypass Coverage
Stealth AI is built to lower scores on the detectors people actually meet: GPTZero, Originality.ai, Turnitin, Copyleaks, ZeroGPT, and Winston AI. The site splits them into general detectors and stricter ones, and claims pass rates on both lists. Treat those claims as vendor statements, since detector updates can change results overnight.
Plagiarism Cleanup
Beyond sounding human, the rewrite is designed to avoid copying existing text, which matters for anyone publishing under a byline. The company says output clears plagiarism checkers such as Turnitin and Copyscape. It's a useful second pass, not a substitute for quoting sources properly.
Support for 50+ Languages
The humanizer works across more than 50 languages, so Spanish, German, Japanese, or Portuguese drafts get the same treatment as English ones. That makes it practical for teams localizing content, where translated copy often reads stiffer than the original.
Built-In AI Detector
Every plan includes detector credits alongside the humanizer, so you can score text before and after a rewrite. Seeing both numbers in one place saves a step, and it shows which paragraphs still need manual editing.
Plan Limits That Scale With Volume
Request size grows with the plan: 80 words per request on the free tier, 500 on Basic, 1,000 on Pro, and unlimited on the Unlimited plan. Monthly caps run from 400 words to unlimited, which lets a light user stay free and a heavy user pay for headroom.
Pros and cons
Pros
- Free tier with 400 words a month and no card required, enough to test the output quality on real text.
- Humanizer and detector in one place, so you can check a score without a second subscription.
- 50+ language support covers most localization work, including right to left scripts.
- Generous per-request limits on paid plans, which cuts the amount of copy and pasting for long documents.
Cons
- The free tier is tight at 80 words per request, so a single essay needs many passes or a paid upgrade.
- No public API, which rules it out for teams that want to humanize text inside their own product.
- Detector scores can shift after a detector update, so a pass today doesn't guarantee a pass next month.
Frequently asked questions
It rewrites AI-generated text into a more natural version and checks the result against AI detectors. You paste a draft, the tool returns a rewritten version, and the detector panel shows how human it looks.
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