Reliably detecting AI-generated text is mathematically impossible

Determining whether text has come from artificial intelligence models like ChatGPT might be impossible to do reliably, according to a new mathematical proof.

The ease with which AI models generate text that seems as if it were written by a human has led to issues such as cheating on essays and exams, and mass disinformation campaigns. So some people have suggested methods to guard against such uses by embedding a hidden watermark in the …