{"version":1,"type":"story","url":"https://digestai.news/story/chatgpt-copies-writing-style-without-detection","json":"https://digestai.news/story/chatgpt-copies-writing-style-without-detection.json","markdown":"https://digestai.news/story/chatgpt-copies-writing-style-without-detection.md","slug":"chatgpt-copies-writing-style-without-detection","headline":"OpenAI adds ‘Reference my writing style’ feature to ChatGPT, lets AI mimic your voice","summary":"OpenAI has quietly rolled out a new personalization option inside ChatGPT called “Reference my writing style.” The tool, accessed through the Personalization settings, can scan a user’s past writings stored in services such as Google Drive, Gmail, Outlook, Slack, Microsoft Teams, SharePoint and Notion. Once granted permission, users can ask ChatGPT to draft new content “using my writing style,” and the model will try to reproduce the author’s voice.\n\nThe feature was confirmed by OpenAI product chief Thibault Sottiaux and was demonstrated by a writer who let the system analyze a recent story about OpenAI’s Astra model. Using GPT‑5.6, ChatGPT produced a roughly 1,000‑word proposal that mimicked the author’s quirks, phrases and punctuation. However, the AI‑detection service GPTZero immediately flagged the text as highly likely to be AI‑generated, underscoring the difficulty of distinguishing personalized AI output from genuine human writing.\n\nThe rollout raises questions about authenticity, plagiarism and the need for watermarking or other safeguards as AI tools become capable of impersonating individual writing styles.","keyPoints":["OpenAI’s hidden “Reference my writing style” option lets ChatGPT learn a user’s tone from Google Drive, Gmail, Slack, and other platforms","The tool, confirmed by product chief Thibault Sottiaux, generated a 1,000‑word document in the author’s voice using GPT‑5.6","AI‑detector GPTZero flagged the output as AI‑generated, highlighting concerns over authenticity and watermarking"],"whyItMatters":"The feature blurs the line between human and AI‑written content, raising ethical and detection challenges for creators, publishers, and regulators of AI‑generated text.","category":{"slug":"agents","name":"Agents & Tools","url":"https://digestai.news/category/agents"},"entities":{"companies":["OpenAI"],"models":["Astra","GPT-5.6"],"people":["Thibault Sottiaux"]},"firstPublishedAt":"2026-09-08T09:34:00Z","updatedAt":"2026-09-14T09:00:00Z","sourceCount":3,"hasPrimarySource":false,"sources":[{"outlet":"Wired AI","title":"‘I Like My Big Rat Wife’: Meet the People Using Chatbots to Write Custom Fiction","url":"https://wired.com/story/chatbot-generated-fiction-i-like-my-big-rat-wife","publishedAt":"2026-09-14T09:00:00Z","type":"press","primary":false,"lead":true},{"outlet":"geeky-gadgets.com","title":"ChatGPT Skills End Repetitive Prompting with Saved Instructions","url":"https://geeky-gadgets.com/chatgpt-skills-guide","publishedAt":"2026-09-13T17:00:00Z","type":"press","primary":false,"lead":false},{"outlet":"pcworld.com","title":"ChatGPT copied my writing style, but couldn’t fool an AI detector","url":"https://pcworld.com/article/3229378/chatgpt-copied-my-writing-style-but-couldnt-fool-an-ai-detector.html","publishedAt":"2026-09-08T09:34:00Z","type":"press","primary":false,"lead":false}],"sourceNotes":null,"discussions":[],"thread":null,"cite":{"text":"Digest AI, \"OpenAI adds ‘Reference my writing style’ feature to ChatGPT, lets AI mimic your voice\", 8 September 2026, https://digestai.news/story/chatgpt-copies-writing-style-without-detection","publisher":"Digest AI","title":"OpenAI adds ‘Reference my writing style’ feature to ChatGPT, lets AI mimic your voice","datePublished":"2026-09-08T09:34:00Z","url":"https://digestai.news/story/chatgpt-copies-writing-style-without-detection"},"generatedBy":"Written by Digest AI's editorial model from the linked sources; the sources are the record.","license":"Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse"}