ChatGPT and Claude

The settings, history behaviour and data controls that differ between the two assistants, and what each one does by default.

• How to stop chat content appearing in lock screen notificationsBoth apps can push a reply's text to your phone's lock screen by default. This covers the phone side settings that hide the preview, on iPhone and Android.
• How a shared chat link can become publicly searchableA chat you shared with one person can be indexed by Google if a discoverable option was enabled or the link was crawled. Here is how each platform handles it.
• What temporary chat hides in ChatGPT, and what it still storesTemporary Chat keeps a conversation out of your sidebar and memory, but OpenAI still keeps it on its servers for about 30 days. Here is what that means.
• How memory works differently in ChatGPT and ClaudeBoth ChatGPT and Claude can recall facts from earlier chats by default, through two different systems. Here is how each works and how to turn it off.
• What incognito chat hides in Claude, and what it still storesClaude's incognito chat keeps a conversation off your sidebar, but Anthropic still retains it for about 30 days, longer under some organisation plans.
• What actually happens when you delete a ChatGPT accountDeleting a ChatGPT account is permanent and removes your chats, memories and settings from OpenAI's systems within about 30 days. Here is what to do first.
• How to permanently delete chats from your ChatGPT historyDeleting a chat removes it from your sidebar at once and from OpenAI's systems within about 30 days. This covers single deletes, bulk delete and archiving.
• What actually happens when you delete a Claude accountDeleting a Claude account removes your conversations and projects with no waiting period, but only after any paid subscription has been cancelled first.
• How to permanently delete conversations from ClaudeClaude lets you delete one chat from its menu or select several with checkboxes at once. Deleted chats leave your list at once, Anthropic's servers in 30 days.
• How to export your conversation history before you delete itBoth ChatGPT and Claude will email you a downloadable archive of your chats and account details on request. This shows where to find the export option.
• Private browsing mode does not stop your chats being savedYour browser's private window keeps local history clean, but a signed in ChatGPT or Claude account still saves the conversation on the server. Here is why.
• How to sign out of ChatGPT or Claude on every device at onceBoth assistants let you end every signed in session from one settings page, useful after using a shared or work computer. Here is where each option lives.
• How to stop ChatGPT using your chats to train its modelsChatGPT trains on your chats by default on free and Plus plans. This shows the exact Data Controls toggle that turns it off, and what it does not change.
• How to stop Claude using your conversations to train its modelsClaude trains on Free, Pro and Max chats unless you switch off Help Improve Claude in Privacy settings. This explains the toggle and what changes.