Writing
Undetectable AI
AI detector and humanizer that rewrites text to pass AI-detection checks and read naturally
Undetectable AI is a detect-and-humanize suite: paste or upload text and it flags AI-generated content, then rewrites flagged passages so they read as human-written while keeping the original meaning and writing level. Rated the #1 AI detector by Forbes, the platform is used by over 24 million people and also ships an AI Humanizer, AI Essay Writer, Paraphrasing Tool, Plagiarism Checker, SEO Content Writer, and separate detectors for AI-generated images, voice, and video, plus a Chrome extension for humanizing text anywhere on the web.
- Best for
- Writers, students, marketers, and agencies who need AI-assisted drafts to read as human-written before publishing, submitting, or grading
- Pricing
- Paid plans from $19/mo (20,000 words/month billed monthly), or from $5/mo billed annually for a 10,000 words/month starter plan; free trial limited to 250 words
Core features
- • AI content detector for text
- • AI Humanizer that rewrites flagged text to read as human
- • AI Image, Voice, and Video detectors
- • AI Essay Writer and Paraphrasing Tool
- • AI Plagiarism Checker and Text Watermark Remover
- • AI SEO Content Writer
- • Chrome extension for humanizing text on any site
- • API access for developers
Use cases
- 1. Checking a draft for AI-detector flags before submitting or publishing
- 2. Rewriting AI-assisted drafts so they read naturally and pass detection tools
- 3. Verifying whether student or contributor submissions were AI-generated
- 4. Humanizing AI-drafted marketing or SEO content at scale via API
How to use
Paste text or upload a file (or try sample AI-generated text) into the detector, run a check to see the AI-generated score, then use the Humanizer to rewrite flagged passages while preserving meaning and writing level. Business users can access bulk credits and the API for higher-volume workflows.
Pricing plans
Starter (billed annually)
$5.00/mo
- • 10,000 words/month
- • Billed annually at $60/year
- • Passes AI detectors
- • API compatible
Pro
$19.00/mo
- • 20,000 words/month
- • Unlimited AI detecting
- • Unlimited Human Auto Typer
- • Writing level matching
Advanced
$31.00/mo
- • 35,000 words/month
- • All Pro features
- • Watermark and future-proof output
Ultra
$42.00/mo
- • 50,000 words/month
- • All Advanced features
- • Highest self-serve word cap
Business
Custom
- • Non-expiring bulk credits
- • Redistribution & white-labeling
- • Priority support
- • Access to Smart Job Applier
FAQ
Is Undetectable AI free to use?
There's a free trial limited to 250 words. Beyond that, paid plans start at $19/month billed monthly, or as low as $5/month on an annual plan for a 10,000-word starter tier.
How is Undetectable AI different from a typical AI detector?
Beyond detecting AI-generated text, it includes an AI Humanizer that rewrites flagged content to read as human-written, plus separate detectors for AI-generated images, voice, and video.
Can Undetectable AI reliably bypass every AI detector?
The company claims high pass rates against major detectors and offers a money-back guarantee if humanized output is flagged, but no humanizer can guarantee results against every detector or future detection update.
Where it holds up
- Combines detection and humanizing in one workflow, so flagged text can be rewritten immediately instead of switching tools
- Rated #1 AI detector by Forbes and used by 24M+ people, with detectors that also cover AI-generated images, voice, and video
- Yearly billing cuts the effective monthly price roughly in half and unlocks a cheaper 10K-word starter tier not available monthly
Where it falls short
- Free trial is capped at just 250 words, too small to meaningfully test on a real essay or article
- No plan under $19/mo without an annual commitment, pricier than some single-purpose AI detectors or humanizers
- Marketing itself as an AI-detection bypass tool raises academic-integrity and platform-policy risks for some use cases
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