Detect whether text is AI-generated or human-written using statistical
analysis including perplexity, burstiness, repetition, and vocabulary
richness
AI Tools
About This Tool
The AI Content Detector helps you identify whether a piece of text was
likely written by a human or generated by AI. Using six complementary
statistical algorithms — perplexity analysis, burstiness scoring,
repetition detection, vocabulary richness, transition word density,
and sentence uniformity — the tool provides an overall AI probability
score along with a detailed metric breakdown and sentence-by-sentence
analysis. All processing happens locally in your browser, ensuring
complete privacy.
Key Features
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Perplexity analysis — detects predictable word choices typical of AI
output
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Burstiness scoring — measures sentence length variation (humans vary
more)
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Repetition detection — identifies repeated phrases and structural
patterns
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Vocabulary richness (TTR) — checks for diverse word usage patterns
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Transition word density — flags overuse of connectors like
"furthermore"
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Sentence uniformity — measures consistency in sentence length
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Color-coded gauge with overall AI probability score
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Sentence-by-sentence analysis with highlighted text
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Supports both English and Chinese text analysis
Use Cases
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Verify the authenticity of student essays and assignments
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Check if blog posts, articles, or marketing copy are AI-generated
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Screen freelance writing submissions for AI-generated content
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Analyze text quality and writing style for content editing
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Evaluate the naturalness of AI-assisted writing before publishing
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Frequently Asked Questions
What is the AI Content Detector?
The AI Content Detector is a free online tool that analyzes text
to determine whether it was written by a human or generated by
AI. It uses multiple statistical algorithms including perplexity
analysis, burstiness scoring, repetition detection, vocabulary
richness, transition word density, and sentence uniformity.
Is the AI Content Detector free to use?
Yes, the AI Content Detector is completely free to use. There
are no hidden charges, subscriptions, or limitations. All
features are available to everyone.
How does the AI Content Detector work?
Paste your text into the tool and click Analyze. The detector
runs six statistical algorithms locally in your browser:
perplexity analysis, burstiness scoring, repetition detection,
vocabulary richness (TTR), transition word density, and sentence
uniformity. It then provides an overall AI probability score
with a detailed breakdown.
Is my data safe when using the AI Content Detector?
Absolutely. All analysis happens locally in your browser. No
text is uploaded to any server, ensuring your content remains
completely private and secure.
How accurate is the AI Content Detector?
The detector uses multiple complementary statistical methods to
provide a balanced assessment. While no statistical method is
100% accurate, combining six different algorithms provides
reliable results. The tool is best used as a screening aid
rather than a definitive verdict.
Can I use the AI Content Detector on my phone?
Yes, the AI Content Detector is fully responsive and works on
all devices including smartphones, tablets, and desktop
computers.