AI Writing Signal Analyzer — Text Pattern Report
Pricing
from $6.50 / 1,000 text analyzeds
Analyze text for AI-writing signals, repetition, burstiness, vocabulary patterns, and evidence snippets with careful non-definitive confidence labels.
List of texts to analyze for AI content. Each can be a plain string or an object with text, id, and metadata fields.
![Text AI Humanizer - $6/1k requests [StealthWriter Alternative] avatar](https://images.apifyusercontent.com/aF--_BSwzHbnpYWvIU8QCAwHeYw83u_J0VSPbmHl4YE/rs:fill:76:76/cb:1/aHR0cHM6Ly9hcGlmeS1pbWFnZS11cGxvYWRzLXByb2QuczMudXMtZWFzdC0xLmFtYXpvbmF3cy5jb20vZEdkMEs0bGZCazYzOFhxdDItYWN0b3ItSUhHekhBbFEydFZyVTBwOTEtRlNiTUluUmt2di11bm5hbWVkXyUyODQlMjkucG5n.webp){kind=avatar}
[ "The quick brown fox jumps over the lazy dog. This is a simple sentence written naturally."]Analyze word-level perplexity (predictability). AI text tends to have uniformly low perplexity.
Analyze sentence length variation. Human text has high burstiness; AI text is more uniform.
Analyze vocabulary diversity (type-token ratio). AI text often has lower vocabulary diversity.
Detect phrase repetition patterns and filler phrases common in AI text.
Analyze stylistic uniformity (paragraph length variation, punctuation patterns).
Analyze each paragraph separately to detect mixed human+AI content.
Probability threshold above which text is classified as likely AI-generated. Min: 0.50, Max: 0.95.
Include detailed breakdown of each analysis signal.
Only output texts classified as AI-generated.