AI Content Detector - Check If Text Is AI Written
Text
4.9
Active
Check whether text was likely written by AI or a human. Paste content for an instant probability breakdown by section.
Updated May 17
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AI Content Detector
Paste any text to estimate whether it was written by a human or generated by AI. The analysis runs entirely in your browser using writing-pattern heuristics - no signup, no cost, nothing uploaded.
0 characters - 0 words
0%
AI likelihood
HumanAI
Word unpredictability
Share of uncommon words. Human writers use more surprising word choices; AI models favor predictable, common words.
Sentence burstiness
Variation in sentence length. Humans mix short and long sentences; AI output is usually more uniform.
Vocabulary richness
Vocabulary diversity adjusted for text length. Repetitive wording is a common trait of AI-generated text.
Important: this is a heuristic estimate based on writing patterns, not proof of authorship. False positives and false negatives are possible - do not use it as the sole basis for accusations or decisions.
How to use
- Paste the text you want to check into the box (at least 40 words for a meaningful result).
- Press Analyze Text. The tool measures three writing signals: word unpredictability, sentence burstiness, and vocabulary richness.
- Read the AI likelihood score and the per-signal breakdown to understand what drove the result.
- Remember the limits: short texts give less reliable results, and skilled editing can mask AI patterns.
Your text never leaves your device. Everything runs locally in your browser - no uploads, no accounts, no cost.
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Tool Information
Category
Text
Updated
May 17
Status
Active
Rating
4.9
Type
Free Tool
20,773 people used this tool
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