None were officially built into the site so it'll vary from moderator to moderator, but the one that mods had a browser script made for to help streamline moder

None were officially built into the site so it'll vary from moderator to moderator, but the one that mods had a browser script made for to help streamline moderation was RoBERTa Base OpenAI Detector from 2019, created prior to the existence of GPT-3, GPT-3.5 (ChatGPT free), or GPT-4 (ChatGPT pro). It'll be far worse than the 2023 one this article is about.