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"Unrivaled accuracy and writing styles!"

AI Detector and AI Humanizer

Detect AI Text and Make it Sound Natural With the Humanizer

0/10000 Words
AI DETECTION LIKELIHOOD
0%
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AI Probability
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TRUSTED BY LEADING ORGANIZATIONS. WE HAVE BEEN FEATURED ON…

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Undetectable AI writing improvement preview

Undetectable AI Helps You Review and Improve Your Writing

  • Green CheckboxRewrite for clarity, flow, and readability
  • Green CheckboxPreserve your original meaning and writing style
  • Green CheckboxReview results and edit responsibly before publishing

See How UD AI Humanizes AI Content

ChatGPT text detected as 2% human and likely 98% AIWithout UD AI
UD AI humanized text detected as 99% human and likely 1% AIWith UD AI

The AI Detector Trusted by Industry Leaders

Here's what top publications say about us:

Business Insider

Undetectable AI's unique approach sets it apart from competitors in the niche, boasting unrivaled accuracy and the ability to replicate different writing styles.

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USA TODAY

One of the best ways to check if AI wrote something is to use Undetectable.ai, which is entirely free.

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Mashable

Time is money, especially in the fast-paced world of content creation. Undetectable AI seems to understand this because the platform boasts quick processing times.

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Hollywood Life

Undetectable.ai definitely has the best free AI detector, because it provides users with paid AI detection models all in one place.

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CBS

The mission of Undetectable AI is not just about providing sophisticated ai writing tools; it's about making these tools accessible to a wide spectrum of users.

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FOX

The Undetectable AI text detector can accurately detect AI-generated text, and was shown to be one of the most accurate free AI detectors.

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The Independent

Undetectable.ai is the top AI content-checking tool on this list... This AI content detector is easy to use.

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Entrepreneur

Undetectable AI can accurately identify patterns of AI-generated text...

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The Most Accurate AI Checker: 99%+ Accuracy Proven By Independent Tests

Undetectable AI consistently outperforms competitors in real-world tests and independent media reviews, helping you detect AI-generated content with unmatched precision.

Tool
PMC
"Sensitivity of Free AI Detectors"
ZDNet
"5 AI Content Detectors that Work"
ReadWrite
"Best AI Detectors"
The Independent
"The Top 7 AI Detectors of 2024"
TechLearning
"Best Free AI Detection Sites"
Undetectable AI
100% detection / 0% false positives
Rated as 100% accurate in AI detection
Recognized for advanced syntax, style, and structure analysis
Ranked #1. Praised for 95% accuracy
Grade A+
Detected all 4 test texts with 100% accuracy
Originality.ai
87.9% detection / Some false positives
Good for basic AI detection
Good entry-level option
Rated as reliable but flagged for aggressive detection and false positives
Grade C
Wrongly flagged NYT text as AI
GPTZero
77.2% accuracy / False positives
Failed to detect reworded content
Listed
Not mentioned in the report
Grade B-
Some ambiguity on Gemini text
Writer.com
62% accuracy / High false positives
Missed paraphrased AI text
Not included
Ranked #7. Criticized for basic results
Grade D
Called AI text "Fantastic!"
Copyleaks
Not in NIH study
Not reliable for SEO rewrites
Low accuracy on rewritten content
Ranked #5. Mixed accuracy and user satisfaction
Grade A
Flagged all AI text correctly

Make Your Text Sound Natural and Human

Join over 24 million users and create more natural, polished writing with Undetectable AI. Check for AI and refine your text in seconds with support for ChatGPT, Gemini, Claude, and more.

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