0 / 50 words minimum

About This Tool

This tool uses heuristic signal analysis (linguistic patterns, phrase detection, writing style). It is not 100% accurate and should be used as a guide. For critical use cases, supplement with multiple AI detection tools.

Free AI Content Detector: Check If Text Is Written by AI or Human

Detect AI-generated content instantly. Paste any text to analyze for ChatGPT, Claude, or other AI writing signals. Get a percentage score and see which detection signals were found.

Common Questions (FAQ)

Formula Verified
Expert Reviewed
Scientifically Precise

How Does AI Content Detection Work?

AI language models have characteristic writing patterns that differ from human writing. Our AI Content Detector uses heuristic analysis — matching text against known patterns, phrases, and linguistic features associated with AI-generated content.

Key Detection Signals

  • AI Phrases: LLMs frequently use transitions like 'it is worth noting', 'furthermore', 'in conclusion', and 'delve into'.
  • Passive Voice: AI models often default to passive constructions at higher rates than human writers.
  • Sentence Uniformity: AI tends to produce consistently structured sentences of similar lengths.
  • Lack of Personal Pronouns: Human writing contains 'I', 'me', 'my' and personal anecdotes more frequently.
  • Contractions: Humans naturally use contractions (can't, won't, I'm) more than AI models.

Limitations of AI Detection

No AI detector is 100% accurate. Edited AI content, text written in a formal academic style, or non-native English may trigger false positives. Use as a guideline, not a definitive verdict.

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Last updated: April 13, 2026

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