Minimum sample
Samples below 60 words are blocked in the website and return unknown through the API.
Experimental AI text signal
Inspect style.
Never infer authorship.
Paste at least 60 words to receive a writing-style warning signal. It is intended for triage and cannot establish who wrote the text.
Open the free checkerScope before score.
Every result is a warning signal. The evidence and limitations below define what this route can and cannot support.
Live policy
The deployed text-style-signals-v3-warning-only lane exposes score, model, source, reason and word count.
OOD evidence
On 1,562 MAGE GPT-4 OOD texts, the tested production hybrid reached 79.00% accuracy with 13.12% real false positives.
Do not infer more than the lane measured.
- Short, Dutch, edited and mixed-language content can be unreliable.
- Style overlap can create false positives for formulaic human writing.
- Never accuse, penalize or reject a person based on this score.