check any text
for ai
Paste text — we'll tell you if ai wrote it.
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Measure perplexity
How predictable the text is. AI picks the most likely next word — a human takes more unexpected turns.
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Gauge burstiness
The spread of sentence length and complexity. High for humans, suspiciously even for AI.
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Match model fingerprints
GPT, Claude and Gemini each leave a stylistic fingerprint. We compare the text against each one.
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Score the signals
20+ markers of machine text add up to a final verdict with a probability.
machine text shows instantly
Left — the checked text with machine patterns highlighted. Right — the detector's verdict.
In the modern world, it is necessary to note that quality content plays a key role. It is important to understand that text should be structured and informative. Moreover, readers value clarity. Thus, a competent approach ensures the goals are met.
the verdict is built from signals
- "perplexity"how predictable the text is
- "burstiness"spread of sentence length
- "model_match"match with GPT / Claude / Gemini fingerprints
- "signals"how many of 20+ markers fired
- "verdict"final ai probability
check your text
Paste text — find out in seconds whether the detector tells it apart from a human.