For users who are under 18, Gemini Apps Activity is saved for 18 months by default and can only be changed to 3 months. Conversations with Gemini apps from users under 13 are not saved to their Google Account by default.
These protections are important for parents and for compliance with children's privacy laws, but the 18-month retention period for teenagers is still substantial and may exceed what parents would expect.
Using Google Gemini means your conversations — including any personal details you share — are stored for up to 3 years and may be read by Google employees for safety and quality purposes. Your chat history being deleted from your account does not necessarily stop Google from retaining associated data for AI training, which is a significant privacy implication many users would not anticipate. You can limit data retention by visiting myactivity.google.com, navigating to Gemini Apps Activity, and changing or disabling the auto-delete settings.