AI Output Detector
Paste any text and get a multi-signal analysis of patterns commonly found in AI-generated content. 100% free, no login required.
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of 8 signals
Signal Analysis
Paragraph-Level Analysis
High AI indicators
Mixed signals
Low AI indicators
Important: No AI detector is 100% accurate. This tool analyzes statistical patterns in text and should be used as one input among many — not as definitive proof. AI-generated text that has been edited by a human may show fewer signals. Human text that is highly structured (academic writing, technical documentation) may show more signals. Always apply human judgement.
How It Works — 8 Linguistic Signals
1
Sentence Length Uniformity — AI produces sentences with less length variation. Humans write in bursts.
2
Vocabulary Richness — Measures unique word ratio. AI tends toward a narrower vocabulary band.
3
Hedging Language — AI overuses phrases like "it's important to note" and "however".
4
Transition-Led Sentences — AI overuses transition words (however, moreover, additionally) as sentence openers.
5
Paragraph Structure — AI writes paragraphs of uniform length. Humans vary widely.
6
Transition Density — AI uses more transition words per paragraph than typical human writing.
7
Predictable Phrasing — Detects AI-signature phrases and filler constructions.
8
Burstiness — Measures variance in complexity across the text. AI is unnaturally consistent.
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