Gemini Notebook (formerly NotebookLM) — privacy & data policy

Provider: Google. PromptPrivacy score: 68/100. Last verified August 26, 2026.

What happens to your data?

Gemini Notebook processes your uploads, notes, and chats to generate research outputs and build your personal knowledge base. Your data is not used to train foundational AI models unless you explicitly submit feedback. Enterprise and Workspace users receive enterprise-grade protections where data is never reviewed by humans or used for model training.

Does it train on your data?

Notebook content, uploads, and chat history are not used to directly train foundational AI models by default. Only content associated with submitted feedback is used for product improvement and machine-learning development, and Workspace/Education users are exempt from training entirely.

Can you opt out?

Training is opt-in by nature because user content is not used to train models unless thumbs up or thumbs down feedback is explicitly submitted. Google Workspace and Education accounts are completely excluded from training.

Data retention

Content submitted through feedback, along with associated prompts and outputs, is retained for up to 3 years disconnected from your Google Account. General retention timelines for standard notebook content are not specified.

Encryption & security

Not specified.

Is it safe for work?

Yes, especially for organizations using Google Workspace, Google Workspace for Education, or Google Cloud accounts, where data is covered under enterprise terms and protected from human review and model training.

Source policy: https://support.google.com/gemininotebook/answer/17004255?hl=en