Claude, Copilot and Gemini: work plans do not train by default. A personal login is a different set of terms

Disclosure: I co-founded Mitosis Labs, which runs Private SuperIntelligence. This is an adaptation of the original guide written for family offices.

This is not a ranking of providers. A chief of staff who pastes a trust summary into a personal Gemini account and one who pastes it into Gemini through the family office's Workspace domain are under two different sets of terms. On Claude for Work and the Anthropic API, Microsoft Copilot signed in with a work Entra ID account, and Gemini in Google Workspace, all three providers say they do not train on your prompts by default.

Consumer versus commercial, in the providers' words

Since Anthropic updated its consumer terms on August 28, 2025, Claude Free, Pro and Max users choose whether chats may be used to train models. Allow it and Anthropic keeps that data for up to five years. Leave it off and 30-day retention continues, with exceptions for safety flags, thumbs up or down ratings (five years, de-linked from your user ID) and programs such as Trusted Tester. Incognito chats are not used to improve Claude. API inputs and outputs are deleted within 30 days. Flagged content can be kept up to two years. Zero data retention applies only to eligible APIs and Claude Code for Enterprise, not the Claude apps.

Microsoft states that work Copilot prompts, responses and Graph data "aren't used to train foundation models." Copilot answers from whatever the user can already open, so an over-shared SharePoint folder becomes an over-shared Copilot answer. Bing web queries sit outside the Data Protection Addendum. Anthropic models inside Copilot sit outside the EU Data Boundary. Copilot services have opted out of Azure OpenAI abuse monitoring, which includes human review. Personal Copilot trains unless you opt out, stores conversation activity 18 months by default, and some conversations get automated and human review for product improvement and digital safety. An opt-out of human review is not available when a Code of Conduct violation is suspected.

Google's Gemini Apps Privacy Hub says a subset of personal chats is reviewed by people, including service providers, and tells you not to enter anything you "wouldn't want a reviewer to see." Keep Activity off still leaves 72 hours of retention, and reviewed chats stay up to three years. Workspace treats prompts as customer data and says content is not human reviewed or used for training outside your domain without permission.

On ChatGPT Free, Go, Plus and Pro, training can be on unless you turn off "Improve the model for everyone." ChatGPT Business, Enterprise, Edu and the API do not train on your data by default. Those ChatGPT lines are from the canonical guide; OpenAI's enterprise-privacy page still returns HTTP 403.

Confirm everyone signs in with the work account. Ask what retention is set. Do not rate sensitive Claude chats. Fix file permissions before you switch Copilot or Gemini on across mail and documents. Each work plan still leaves the text on the provider's servers for a period.

Private SuperIntelligence from Mitosis Labs is an AI concierge for enterprises, family offices and private clients that works across your own email, documents and data and answers with citations. Each deployment is built for one client, and it captures none of that client's data. That is a different design from the work plans above, not a claim that those work plans are unsafe.

Speak with the founders

Private SuperIntelligence takes a limited number of families at a time so every one gets the same standard of service. Book a private call to talk through your office with Alex Morris.

Prakshal Jain (PJ), Co-founder and CTO, Private SuperIntelligence (by Mitosis Labs)

Alexander Morris, Co-founder and CEO, Private SuperIntelligence (by Mitosis Labs)

Originally published at privatesuperintelligence.si.

Sources: Anthropic, August 28, 2025 https://www.anthropic.com/news/updates-to-our-consumer-terms ; Anthropic Privacy Center; Microsoft Learn Copilot enterprise data protection and privacy; Microsoft Support Copilot privacy FAQ; Gemini Apps Privacy Hub; Google Workspace Generative AI Privacy Hub.

Piece ID: ICG1-DEV