Spotting the AI fingerprint: how ChatGPT’s em dash obsession gives away its digital authorship and what to do about it

ChatGPT’s Em Dash Overuse Unveils AI’s Signature Writing Style
While improving steadily since its 2022 launch, ChatGPT’s frequent use of em dashes has become a telltale sign of AI-generated content. Writers can request AI to avoid these dashes to maintain human-like prose.

Source: zdnet.com