Technology
OpenAI Tests New ChatGPT Tool That Learns Users' Writing Style From Connected Apps

OpenAI is reportedly testing a new feature called "Writing Style" for ChatGPT that analyzes examples of a user's writing from linked applications to replicate their personal tone and voice. The feature is currently being rolled out to a limited group of users.
According to an onboarding screen for the feature, ChatGPT will write in a user's voice by referencing examples pulled from connected apps. Users can supply writing samples across three categories: Messaging, Documents, and Email. For messaging, OpenAI lists Slack as a connected source. For documents, it includes Google Drive and Notion. For email, it references Gmail.
Once set up, ChatGPT would be able to draw on a user's natural writing style from these services when generating new content, eliminating the need to manually explain tone preferences or paste writing samples into each conversation.
The feature shares similarities with Claude's "Styles" tool from Anthropic, which allows users to upload or paste writing samples to create a custom style profile based on their communication patterns. However, OpenAI's approach reportedly goes further by allowing ChatGPT to directly reference existing writing within connected services, rather than requiring manual sample submission. This could give the AI access to a broader and more varied range of real writing examples, including differences in tone between emails, messages, and longer documents.
OpenAI has confirmed that it is testing the Writing Style feature, though the company has not indicated when — or if — it will be released more broadly to all users.