# Authors Guild test finds some AI detectors perfectly identify human writing while others fail on every single text

> Source: <https://the-decoder.com/authors-guild-test-finds-some-ai-detectors-perfectly-identify-human-writing-while-others-fail-on-every-single-text/>
> Published: 2026-06-25 11:21:37+00:00

The Authors Guild tested five AI detectors on human-written texts. Pangram and Grammarly correctly identified all of them, while Sidekicker and ZeroGPT flagged human-written articles as AI-generated. But the Guild also warns of a paradox: professionally written texts look statistically similar to AI output because language models were trained on exactly that kind of writing.

The article [Authors Guild test finds some AI detectors perfectly identify human writing while others fail on every single text](https://the-decoder.com/authors-guild-test-finds-some-ai-detectors-perfectly-identify-human-writing-while-others-fail-on-every-single-text/) appeared first on [The Decoder](https://the-decoder.com).