Gemini (Free) — privacy & data policy

Provider: Google. PromptPrivacy score: 65/100. Last verified November 01, 2026.

What happens to your data?

Your prompts, shared files, and activity are stored in your Google Account to provide responses and train Google AI models. De-identified samples are reviewed by human contractors to assess quality and safety, remaining stored for up to three years. You can prevent future data from being used for AI training by disabling Keep Activity or using temporary chats.

Does it train on your data?

Trains on your content by default, with an opt-out. Google uses your prompts, uploaded files, and interactions to develop and train generative AI models and other machine learning technologies. You can stop future chats from being used for training by turning off the Keep Activity setting or using temporary chats, provided you do not submit feedback.

Can you opt out?

Yes. Users can opt out of having future interactions used to train AI models by disabling the Keep Activity setting in Gemini Apps Activity or using temporary chats.

Data retention

User activity is saved by default with an 18-month auto-deletion schedule, which can be modified to 3 months, 36 months, or indefinite, and chats can be manually deleted at any time. When activity is reviewed by human evaluators, it is disconnected from your Google Account and retained for up to three years. If Keep Activity is turned off or temporary chats are used, conversations are retained for up to 72 hours for service delivery and safety purposes.

Encryption & security

Not specified. The policy does not detail encryption in transit, encryption at rest, or third-party security certifications, and explicitly notes that messages created and sent with the Gemini app are not end-to-end encrypted.

Is it safe for work?

No. Because chats and uploaded files are trained on by default and may be inspected by human reviewers, Google explicitly warns users not to enter confidential data. Workplace use should instead be governed by Google Workspace with commercial data protection terms.

Source policy: https://support.google.com/gemini/answer/13594961