AI Content Detector

The AI Content Detector analyzes text using statistical and linguistic heuristics to estimate the likelihood that content was generated by AI tools such as ChatGPT, Claude, Gemini, and others. It evaluates multiple dimensions including sentence length variation, vocabulary richness, AI phrase patterns, paragraph uniformity, transition word density, and sentence structure repetition. All analysis runs entirely in your browser — no text is sent to any server.

Paste the article or text you want to analyze into the input area (minimum 50 characters). Click the Analyze button to start. The tool will display an overall AI probability score along with a detailed breakdown of each analysis dimension. The probability ranges from 1% to 99% — higher values indicate a greater likelihood of AI generation.

Sentence Length Variation: Measures how much sentence lengths vary. AI text tends to have uniform sentence lengths, while human writing shows more variation.

Vocabulary Richness: Evaluates the type-token ratio. AI text often uses a moderately diverse but formulaic vocabulary.

AI Phrase Patterns: Scans for phrases and expressions commonly found in AI-generated text in both English and Chinese.

Paragraph Uniformity: Assesses how similar paragraphs are in length. AI paragraphs tend to be more uniform.

Transition Word Density: Measures the frequency of transitional phrases. AI text often overuses connectors like 'furthermore', 'moreover', 'in conclusion'.

Structure Repetition: Checks for repetitive sentence openings and structures.

This tool uses heuristic analysis, not machine learning models. It provides a rough estimate and should not be used as the sole basis for judgment. For best results, analyze texts of at least 200 characters. Short texts may produce unreliable scores. The tool works with both English and Chinese text. Results are most meaningful when comparing multiple texts rather than evaluating a single piece in isolation.