To help with quality and to improve our products, human reviewers read, annotate, and process your conversations with Gemini. Google takes steps to protect your privacy as part of this process, for example by disconnecting your conversations from your Google Account before reviewers see them.
Most users assume AI chat conversations are only processed by automated systems; learning that human reviewers can read their conversations — even in pseudonymised form — fundamentally changes the privacy expectation for Gemini.
Every conversation you have with Google Gemini is stored by Google for up to 18 months by default and may be read by human reviewers for safety and quality purposes, meaning sensitive personal information shared in chats could be accessed by Google employees. Your Gemini conversation data may also be used to train and improve Google's AI models unless you opt out, creating a persistent data footprint that extends well beyond the immediate session. You can turn off Gemini Apps Activity at myactivity.google.com to stop future conversations from being saved, and you can delete past conversations from your Gemini activity history on that same page.