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Comparisons › Microsoft Copilot vs Gemini
Microsoft Copilot vs Gemini: privacy for business
Microsoft Copilot: Best-graded plan: Microsoft Copilot Microsoft 365 Copilot (Business) (A). Microsoft Copilot Microsoft 365 Copilot (Business) does not train on your data by default. Microsoft Copilot older app (personal account) can use your data for training unless you opt out.
Gemini: Best-graded plan: Gemini in Google Workspace (A). Gemini in Google Workspace does not train on your data by default. Gemini app (personal account) can use your data for training unless you opt out.
Gemini: Best-graded plan: Gemini in Google Workspace (A). Gemini in Google Workspace does not train on your data by default. Gemini app (personal account) can use your data for training unless you opt out.
Microsoft Copilot
| Plan | Grade | Trains by default | Human review | Retention | DPA | SOC 2 |
|---|---|---|---|---|---|---|
| Microsoft 365 Copilot (Business) | A | no | no (opted out of Azure OpenAI abuse-monitoring review) | Admin retention policies via Microsoft Purview | yes (Microsoft Data Protection Addendum) | unknown (Office 365 has SOC 2 Type 2; Copilot scope not confirmed) |
| older app (personal account) | C | yes unless you opt out (older Copilot app; some groups, e.g. signed-out users and under-18s, excluded) | yes, no opt-out (older Copilot app) | 18 months by default (older Copilot app); delete chats anytime | unknown | unknown |
| new app since Aug 18, 2026 (personal account) | B | no (prompts, responses and files aren't used to train foundation models) | unknown | unknown | unknown | unknown |
Sources: Microsoft 365 Copilot (Business) · older app (personal account) · new app since Aug 18, 2026 (personal account)
Is Microsoft Copilot safe for business? · Full Microsoft Copilot breakdown
Gemini
| Plan | Grade | Trains by default | Human review | Retention | DPA | SOC 2 |
|---|---|---|---|---|---|---|
| app (personal account) | D | yes while Keep Activity is on (default state not stated) | yes | Auto-delete 18 months by default; human-reviewed chats kept up to 3 years; 72 hours with Keep Activity off | no (personal accounts use the Google Terms of Service; the Cloud DPA covers Workspace accounts) | unknown |
| in Google Workspace | A | no | no | Gemini app: admin-set auto-delete after 3, 18 (default) or 36 months; 72 hours if history is off. Gemini in Workspace apps: 90 days to indefinite, set by admins | yes (Cloud Data Processing Addendum covers Workspace) | yes (Gemini has SOC 1/2/3) |
Sources: app (personal account) · in Google Workspace
Is Gemini safe for business? · Full Gemini breakdown
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