Gemini AI history is usually managed from the account or activity settings tied to the service you are using. In many cases, you can view recent chats or activity from the sidebar or history area, then delete individual conversations or clear all saved activity from the settings menu. If Gemini AI is connected to a broader Google account, there may also be activity controls in the account privacy settings where you can turn history saving on or off, or set auto delete options.
If you want to remove something specific, look for options such as delete conversation, clear history, or activity controls. If you are trying to stop future history from being saved, check whether history recording is paused or disabled.
The exact steps can vary by device, region, and product version, so the current web page for Gemini AI or your account settings is the best place to confirm the available controls and find any contact information if you need account specific help.