ChatGPT's New "Writing Style" Feature Wants to Sound Like You, Explained
An onboarding screen spotted inside ChatGPT on September 4, 2026 revealed a feature OpenAI hasn't formally announced: "Writing Style," which reads your real writing from apps like Gmail, Slack, Google Drive, and Notion so ChatGPT can draft new messages that actually sound like you wrote them -- not like a chatbot. OpenAI has since confirmed it's testing the feature with a small group of users. Here's what it does, how it works, and what's still unclear.
⚡ Quick facts
- Spotted: September 4, 2026, via an onboarding screenshot shared on X
- Confirmed: OpenAI says Writing Style is being tested with a small group of users
- Connects to: Slack (messaging), Google Drive and Notion (documents), Gmail (email)
- Not yet available broadly: no confirmed timeline or list of eligible ChatGPT plans
What Writing Style actually does
Most people who want ChatGPT to sound like them have to paste in writing samples or repeat the same tone instructions every time they start a new chat. Writing Style is built to skip that step. The onboarding screen reads: "ChatGPT will write in your voice by referencing examples from your connected apps." Once you connect an app, ChatGPT can pull directly from writing that's already sitting in it -- emails you've sent, messages you've posted, documents you've drafted -- instead of you re-explaining your tone from scratch.
Beyond broad tone, the feature is designed to notice specific habits: phrases you use often, how you sign off an email, or quirks like how you capitalize words. The goal is new drafts that read like an extension of your own writing rather than generic AI output.
Which apps it connects to
The screenshot that surfaced groups connections into three categories. Under Messaging, it lists Slack. Under Documents, it lists Google Drive and Notion. Under Email, it lists Gmail. Some later coverage has also referenced SharePoint, though OpenAI hasn't published an official, finalized list of supported apps -- what's confirmed so far comes from the onboarding screen itself and OpenAI's acknowledgment that testing is underway.
Who has it right now
Writing Style is only available to a small group of testers at the moment. OpenAI has confirmed the feature exists and is being tested but hasn't said which ChatGPT plans -- Free, Plus, Pro, Business, or Enterprise -- will eventually get access, or when it might expand beyond this initial group. Given how the feature leans on workplace tools like Slack and Gmail, it wouldn't be surprising if a business-focused plan gets first access when it does roll out wider, but that hasn't been confirmed either.
What's still unclear
OpenAI hasn't detailed how it handles the writing samples Writing Style references -- specifically how long they're stored, or whether any of that content is used to improve its models. Anyone testing the feature is effectively giving ChatGPT read access to real emails, chats, and documents, so that's worth watching closely before connecting any account that holds sensitive or confidential material.
The approach is also a departure from how style personalization has worked elsewhere. Anthropic's Claude, for instance, offers a "Styles" feature built around styles you define or upload manually. Writing Style instead skips the manual step entirely by reading from writing you've already produced -- a more automatic approach, but one that depends on trusting OpenAI with access to more of your existing accounts.
Frequently asked questions
What is ChatGPT's new Writing Style feature?
Writing Style is a ChatGPT feature OpenAI is testing that reads real writing samples from apps you connect -- like Gmail, Slack, Google Drive, and Notion -- and uses them to draft new text that sounds like you, matching your phrasing, sign-offs, and even capitalization habits.
Which apps can Writing Style connect to?
The onboarding screen spotted so far groups connections into three categories: Messaging (Slack), Documents (Google Drive and Notion), and Email (Gmail). Connecting an app lets ChatGPT reference your existing writing in it instead of you pasting samples into a chat.
Is Writing Style available to everyone yet?
No. OpenAI has confirmed the feature is in testing with a small group of users. The company has not said which ChatGPT plans will eventually get it or when it might roll out more broadly.
Does OpenAI say how it handles the data from my connected apps?
Not in detail yet. OpenAI hasn't published specifics on how long referenced writing samples are stored or whether they're used to train its models, so that's worth watching before connecting sensitive work accounts.