YSK: You can stop ChatGPT, Claude, and Gemini from storing your conversations. Most people don't know these settings exist
Why YSK: By default, most AI chatbots store your conversations and may use them to train future models. In some cases, human reviewers can also see your messages. So if you've ever pasted personal info (names, financial details, medical questions, etc.), that data could sit on third-party servers for a long time.
The good news: it takes about 2 minutes to turn this off, and most people don't even realize the option exists.
Here's how to lock things down:
ChatGPT: Settings → Data Controls → turn off "Improve the model for everyone" This stops your future chats from being used for training (data may still be kept for up to 30 days for safety monitoring).
Claude: Settings → Privacy → turn off "Help improve Claude" If left on, Anthropic may retain your chats for up to 5 years (this was changed from 30 days in October 2025).
Gemini: Go to myaccount.google.com → Data & Privacy → Gemini Apps Activity → turn it off Google literally says: "Do not enter anything you would not want a human reviewer to see."
Bonus tips:
- Use temporary/incognito chats for anything sensitive (ChatGPT = Temporary Chat, Claude = Incognito mode).
- Quickly scan documents before pasting. Remove unnecessary names, phone numbers, or addresses.
Sources: OpenAI Privacy Policy, Anthropic Consumer Terms (Oct 2025), Gemini Apps Privacy Hub