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

In a test by the Authors Guild, AI detectors from Pangram and Grammarly correctly identified every human-written text as human.

Originality.ai also performed well. The test used ten Guild articles published between 2020 and 2022, before generative AI went mainstream. Sidekicker delivered the worst results. Every single article was flagged as mostly AI-generated, with two scoring 100 percent. ZeroGPT was also unreliable, reporting sometimes high AI percentages for all the human-written texts.

Articles

ZeroGPT

Originality.ai