Seomatiq's Free AI Content Detector
Is Your Text AI-Written?
Seomatiq's AI Detector analyses your text across 5 heuristic signals — sentence length consistency, AI phrase patterns, paragraph balance, vocabulary diversity, and punctuation density. Achieves 60-75% accuracy on advanced models like GPT-4 with texts of 150+ words. All processing runs in your browser; no data is ever sent to a server.
Who Is Seomatiq's AI Detector For?
Which Signals Does Seomatiq's AI Detector Analyse?
Five heuristic signals are evaluated in sequence to produce a single 0-100 AI score. Each signal contributes between 10-25 points; the total is capped at 100.
Sentence length analysis
AI models typically produce sentences of similar length. Low variance in sentence length is an AI signal.
Phrase pattern detection
"Furthermore", "moreover", "in conclusion", and similar phrases appear far more often in AI-generated text.
Paragraph balance
AI writes paragraphs of very even length. Human writing shows much more variation in paragraph size.
Vocabulary diversity
A low ratio of unique words to total words signals limited vocabulary — a common characteristic of AI output.
Punctuation density
AI text tends to use commas and semicolons at a higher rate than typical human writing.
Frequently Asked Questions About Seomatiq's AI Detector
Next step after AI detection: Humanize
Seomatiq converts AI-written text to a natural human tone while preserving all SEO signals.
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