OpenAI is testing a new personalization feature for ChatGPT Work that automatically adapts to users’ individual writing styles. To do this, the chatbot connects to Gmail, Google Drive, Slack, SharePoint, and Notion and retrieves emails, documents, and messages stored there. The AI then crafts its own text in the same tone, without users having to manually enter sample text.
How ChatGPT Work’s new writing style feature works
Until now, users had to explain to ChatGPT each time what tone they wanted or provide their own text examples. The new feature is designed to eliminate this need: Through the “Personalization” section in the settings, users can specify which services ChatGPT is allowed to search for writing samples. According to OpenAI, the system recognizes, among other things, preferred greetings, recurring favorite phrases, and typical punctuation and capitalization patterns of individual users.
Four integrations are currently available:
- Gmail: Email correspondence
- Google Drive (including Google Docs): Documents
- Slack: Chat messages
- SharePoint and Notion: internal documentation
The more sources are shared, the more comprehensively the language model should be able to reflect a person’s individual style, from classic business emails to short Slack messages.
Availability: Only for paying ChatGPT Work users
The feature is currently in a limited test phase and is available exclusively in the web version of ChatGPT Work —OpenAI’s offering tailored for businesses—accessible via the personalization settings. A paid ChatGPT Work subscription is required. According to reports so far, a mobile version is not yet available, and OpenAI has not yet announced a specific date for the widespread rollout.
Is this new in ChatGPT? pic.twitter.com/DJfIWKjy4a
— Gael Breton (@GaelBreton) September 4, 2026
Privacy: Unanswered Questions About Data Storage and AI Training
In order for ChatGPT to access Gmail, Slack, or Notion, users must grant the application extensive permissions for private emails, documents, and chat histories. This is precisely where the criticism comes in, as reported by Bleeping Computer, among others: OpenAI has not yet disclosed in detail how long the extracted writing samples are stored on its own servers and whether they could be used to train future language models. Users who want to try out the feature should therefore carefully review in advance which access permissions they are granting to each service in their personalization settings.
If you’d like to know in general where in Germany a labeling requirement for AI-generated content applies, you’ll find an overview in our guide to the 2026 AI labeling requirement.
ChatGPT Work vs. Claude Styles: The Difference Compared to Anthropic
Competitor Anthropic already offers a similar feature for its Claude chatbot through what it calls “Styles.” The difference: Claude learns writing styles only from text samples that users manually upload or paste. ChatGPT Work, on the other hand, directly accesses existing content in Gmail, Slack, and other platforms, thereby gaining access to significantly more writing samples—though at the expense of users’ data sovereignty.
| Feature | ChatGPT Work (Review) | Claude Styles |
|---|---|---|
| Data Source | Gmail, Google Drive, Slack, SharePoint, Notion | Manually uploaded text examples |
| Effort required by users | One-time app linking | Provide sample texts yourself |
| Availability | Small test group, ChatGPT Work (Web) | More widely available |
Conclusion
Anyone who has to write emails, Slack messages, and reports in their own voice on a daily basis could actually save time with this new feature—provided OpenAI first clarifies the outstanding questions regarding data retention and AI training. Currently, only a small group is testing the feature. OpenAI has not yet said if or when it will be available to all ChatGPT Work customers.
