“A modern chatbot writes warm, clean, grammatically perfect text, often better than the average person in a hurry. If you are scanning for typos or robotic phrasing, you are using a 2022 test on a 2026 system,” he said.

“What has not been solved is consistency, specificity, and backbone.”

Instead, you need to think about speed and sentence shape. “Chatbots answer almost instantly, and every answer is roughly the same length and structure, neatly organised, often with a tidy summary at the end,” said Martynenko.