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Mask AI Detector

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What Mask AI Detector is

Mask AI Detector is a web tool for checking text for AI-generated content. It analyzes a scan with six detection engines, returns sentence-level results, and highlights sentences it considers suspicious. Each scan can contain up to 2,500 words. Sample text buttons let users try examples associated with ChatGPT, Claude, Gemini, and Grok.

The detector sits within Mask AI’s broader set of writing tools, which includes an AI humanizer, AI writer, plagiarism checks, and citation verification. The humanizer offers Light, Medium, and Aggressive rewrite levels, with a way to compare the revised text against the original. Mask AI describes uses such as editing AI-assisted reports, proposals, and blog posts, and reviewing work from freelancers and contributors.

Mask AI lists a Free plan and an Unlimited plan. Unlimited costs $10.99 a month and covers unlimited humanizations, plagiarism removals, AI content detection, plagiarism checks, and content generations, subject to fair-use terms. The Free plan has limited AI features, 600 AI humanization words, and 250 words per generation; its billing detail says $131.88 / year after a 7 day trial. The product is web-based and has no browser extension.

Who it suits

Mask AI may suit people who want sentence-level AI detection alongside rewriting, plagiarism checks, and citation verification in a web-based writing toolkit. Its described uses include editing AI-assisted reports, proposals, and blog posts, or reviewing work from freelancers and contributors.

What it does well

  • Analyzes text with six detection engines.
  • Highlights suspicious sentences and gives sentence-level results.
  • Supports scans of up to 2,500 words.
  • Humanizer includes three rewrite levels and original-text comparison.
  • Unlimited plan includes detection, plagiarism checks, and content generations.

What to know first

  • Scans are limited to 2,500 words.
  • The Free plan has limited AI features and word quotas.
  • Unlimited is subject to fair-use terms.
  • No browser extension is available.

Limits

The Free plan includes 600 AI humanization words, 250 words per generation, and limited AI features. Its billing detail says $131.88 / year after a 7 day trial. Detector scans are limited to 2,500 words; the Unlimited plan is subject to fair-use terms.

Plans

PlanBilled and limitsPrice
UnlimitedUnlimited humanizations · unlimited plagiarism removals · unlimited AI content detection · unlimited plagiarism checks · unlimited content generations; subject to fair-use terms$10.99 a month
FreeBilled as $131.88 / year after 7 day trial · 600 AI Humanization words · 250 Words Per Generation · Limited AI FeaturesOn request

As mask.ai lists them, read 8 Oct 2026. The maker's own page has the final word.

Getting started

  1. Open https://www.mask.ai/ai-detector in a web browser.
  2. Choose the Free plan or the Unlimited plan.
  3. Use the detector’s sample text buttons or provide text for a scan of up to 2,500 words.
  4. Review the sentence-level results and highlighted sentences.

Verdict

Choose Mask AI if you want web-based AI detection with sentence highlights and a wider set of writing tools. The Unlimited plan adds unlimited detection and other listed tools for $10.99 a month, subject to fair-use terms. Look elsewhere if you need a browser extension or scans longer than 2,500 words.

Questions

What does Mask AI Detector do?

It checks text for AI-generated content using six detection engines, then provides sentence-level results and highlights suspicious sentences.

How much text can it scan?

The detector page shows a limit of 2,500 words per scan.

Is there a free plan?

Yes. The Free plan includes 600 AI humanization words, 250 words per generation, and limited AI features. Its billing detail says $131.88 / year after a 7 day trial.

How much does Unlimited cost?

Unlimited costs $10.99 a month and includes unlimited humanizations, plagiarism removals, AI content detection, plagiarism checks, and content generations, subject to fair-use terms.

Which platforms are available?

Mask AI is available on the web and has no browser extension.

What information does Mask AI collect and where is it processed?

Its privacy policy says it collects account details, device information, and usage information. It says its servers are in the United States and information may be transferred, stored, and processed there; payment data is stored by Stripe, Inc.

Facts from Mask AI Detector's own pages

AI model examples
The detector page offers sample text buttons for ChatGPT, Claude, Gemini, and Grok. · mask.ai, 8 Oct 2026
Data location
The privacy policy says its servers are located in the United States and information may be transferred, stored, and processed there. · mask.ai, 8 Oct 2026
Detection engines
The product page says its detector analyzes text with six detection engines. · mask.ai, 8 Oct 2026
Input limit
The detector page shows a limit of 2,500 words for a scan. · mask.ai, 8 Oct 2026
Intended users
The main site describes the product for editing AI-assisted reports, proposals, and blog posts, and for reviewing work from freelancers and contributors. · mask.ai, 8 Oct 2026
Payments
The privacy policy says payment data is stored by Stripe, Inc. · mask.ai, 8 Oct 2026
Privacy data
The privacy policy says the company collects account details such as names, email addresses, usernames, and passwords, as well as device and usage information. · mask.ai, 8 Oct 2026
Purpose
Mask AI’s detector checks text for AI-generated content across six AI detection systems. · mask.ai, 8 Oct 2026
Rewrite options
The humanizer offers Light, Medium, and Aggressive rewrite levels and lets users compare the rewrite with the original. · mask.ai, 8 Oct 2026
Security statement
The privacy policy says the company aims to protect personal information through security measures. · mask.ai, 8 Oct 2026
Sentence results
The detector provides sentence-level results and highlights suspicious sentences. · mask.ai, 8 Oct 2026
Support
The privacy policy directs questions and support inquiries to [email protected]. · mask.ai, 8 Oct 2026
Writing toolkit
Mask AI’s main site describes an AI humanizer, AI detector, AI writer, plagiarism checks, and citation verification as writing tools. · mask.ai, 8 Oct 2026

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