Communication & Synthesis
Google's frontier AI assistant for chat, research, and work inside Gmail, Docs, and Drive.
From $20 / mo
Visit WebsiteResearch & Analysis
Google's source-grounded research notebook that turns your documents into chat, summaries, and audio overviews.
From $20 / mo
Visit Website4-P Sovereignty Matrix
Lumen Trust Notes
Google Gemini
Gemini runs fully in Google's cloud with no local or self-hosted option for the consumer and Workspace products, so data sovereignty is Low. Google offers a genuinely usable free tier and broad accessibility, supporting High parity, while the product's clear productivity mission inside Workspace earns High purpose. Closed models and limited training-data transparency keep Provenance Low. Strong for Google-centric workflows; treat sensitive data under your organisation's Google Workspace and AI data-processing settings.
NotebookLM
Sources and chats are processed in Google's cloud; there is no local NotebookLM for consumers, so Privacy is Low—upload only what you are comfortable storing with Google. The free tier is genuinely useful, supporting High parity, and the grounded-citation design reflects a High-purpose research mission. Model and training transparency remain limited (Provenance Low). Excellent for coursework and knowledge packs; avoid highly confidential client files unless Workspace/enterprise controls and policy allow it.
Pricing
Google Gemini
From $20 / month
NotebookLM
From $20 / month
Disclaimer
Scores are based on publicly available information and Lumen's auditing criteria at the time of assessment. They may not reflect recent changes.
This comparison is not a legal or security audit. Read our full disclaimer.