OpenAI says ChatGPT will listen if you tell it not to use em dashes

OpenAI has announced that its AI language model, ChatGPT, will adhere to user instructions regarding the use of em dashes. This feature allows users to specify their preferences for punctuation, enhancing the customization of interactions with the AI. The announcement was made on November 15, 2025, and reflects OpenAI's ongoing commitment to improving user experience and responsiveness in its AI products.