OpenAI says ChatGPT will listen if you tell it not to use em dashes
You may now have to scrutinize what you read on the internet (and event on print) more closely to determine if it’s the product of AI. Sam Altman has revealed on X that if you tell ChatGPT not to use em dashes in your custom instructions, the chatbot will now finally listen to you. Previously, ChatGPT would ignore your instruction and continue using em dashes even if you tell it not to. Small-but-happy win:If you tell ChatGPT not to use em-dashes in your custom instructions, it finally does what it's supposed to do!— Sam Altman (@sama) November 14, 2025<br /> <br /> <br /> People are treating the presence of em dashes, especially if they’re used in abundance, as one of the biggest tells if something was written by large language models. Of course, just because [...]
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