X—or as most of us still call it, Twitter—has made a change to its default settings that allows everything you post and do on the platform to be used to train Grok, a ChatGPT competitor from X owner Elon Musk's xAI startup.

Musk admitted last year that xAI would use public tweets to train Grok. And now, as xAI powers up a Memphis facility to supercharge that effort, it has quietly updated the help page for its "humorous AI search assistant" to say that "your posts as well as your interactions, inputs and results with Grok are used to train and fine-tune the underlying model."

While everyone on X is now training Grok, only those with premium subscriptions can use it. To stop the data scraping, X users need to opt out, but that option is only available on the desktop, not the mobile app. If you want to stop sharing your X data with Grok, here's what to do.

Click the three dots to go to Settings and Privacy > Privacy and Safety.

Recommended by Our Editors

Google's Agentic AI Tool Gemini Spark Is Now Available. Here's How to Try It

I Used ChatGPT to Build Complex Spreadsheets Fast. Here’s How You Can, Too

GitHub Copilot Costs Skyrocket As Users Are Pushed to Per-Token Billing

(Credit: X)

Scroll down to Data Sharing and Personalization and click Grok.

(Credit: X)

Click Delete Conversation History to get rid of any interactions you've already had with Grok.

(Credit: X)

Then uncheck the box that says Allow your posts as well as your interactions, inputs, and results with Grok to be used for training and fine-tuning.

(Credit: X)