OpenAI says it’s fixed ChatGPT’s em dash problem

ChatGPT, developed by OpenAI, has made a significant update by allowing users to instruct the chatbot to stop using em dashes. The use of em dashes in text generated by AI has become a common criticism in various platforms such as school papers, emails, customer service chats, and more. This feature has led to accusations of laziness and reliance on AI technology for writing tasks.

While some writers have defended the use of em dashes in their writing, the inability of chatbots like ChatGPT to avoid this punctuation mark has made it a controversial element. OpenAI CEO Sam Altman recently announced that the company has addressed this issue, allowing users to customize their instructions and control the use of em dashes in ChatGPT’s output.

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

According to a post on Threads, ChatGPT can now be instructed to avoid using em dashes through custom settings, giving users more control over the chatbot’s output. This update marks a positive step towards improving the user experience with ChatGPT and addressing concerns about the overuse of em dashes in AI-generated content.

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