OpenAI tests ChatGPT feature that learns your writing style from connected apps

OpenAI is piloting a new "Writing Style" feature for ChatGPT that analyzes writing samples from connected services like Slack, Google Drive, and Gmail to mimic a user's tone. The feature aims to reduce the need for users to repeatedly explain their preferred style. It is currently available to a limited group of testers, with no public rollout date announced.
The pilot program lets users designate specific sources—Slack for messaging, Google Drive and Notion for documents, and Gmail for email. This allows the AI to observe how a person's tone shifts between quick chats, formal reports, and professional correspondence.
Unlike Anthropic's earlier Styles feature, which required manual sample uploads, this method pulls directly from existing app data. That could provide a more comprehensive and authentic dataset for mimicking a user's voice. OpenAI has confirmed the test, but a public release date remains unannounced.
This feature could streamline daily communication for professionals, reducing repetitive style instructions. However, it may raise significant privacy concerns, as users must grant the AI access to sensitive emails and documents. Individuals might benefit from faster drafting, yet they could also face risks if their unique voice is misapplied in formal contexts. The eventual societal impact will depend on how effectively OpenAI safeguards user data and manages stylistic accuracy.