Do my emails and Google documents train Gemini?

It depends entirely on the account type. On a professional Workspace account, Google states it doesn't use content to train models outside the domain without permission. On a personal account, a subset of conversations is reviewed by humans to improve the models, including when history isn't kept.

What's the difference between a personal Google account and a Workspace account for Gemini?

An entire difference in regime. On Workspace, content isn't reviewed by humans nor used for training outside the domain without permission, and retention is set by the administrator. On a personal account, human review exists by default and reviewed conversations are kept for up to three years.

Can Gemini read files I don't have access to at my company?

No, according to Google's Workspace documentation: the AI follows the permissions already in place. If an employee isn't allowed to see a file, Gemini can't access it either to build its answer.

How much does Gemini cost for a company on Google Workspace?

We couldn't verify a reliable amount: the personal Google AI plans and the Gemini add-on for Workspace are two separate catalogs, and their pricing pages calculate the price in JavaScript based on the country. A Workspace account has to add this module to its existing subscription rather than subscribe to a personal plan.

What's the difference with Claude or ChatGPT?

The most verifiable difference lies in integration: Gemini lives inside Gmail, Docs and Sheets rather than a separate window, which matters for a team already working in those tools. On the personal-versus-professional-account distinction, Google documents two clearly different regimes, while Claude applies the same no-training policy to both audiences.

Gemini: our review

Gemini is Google's assistant, built into Gmail, Docs, Sheets and Drive rather than offered as a separate app. What matters most for a company isn't what it can do, but the data regime that applies depending on whether it runs on a personal account or a professional Google Workspace account — the two are very different.

Price not verified

Go to Gemini's website

What we take away from it

What counts in its favor

Natively built into Gmail, Docs, Sheets and Drive: the context of the document or message is already available, with no copy-pasting into a separate tool.
On a Google Workspace account, company content is neither reviewed by humans nor used to train models outside the domain without permission, according to the policy Google publishes for Workspace.
Public security certifications for Gemini on Workspace: ISO 42001, BSI C5, FedRAMP High, with announced compatibility with HIPAA requirements.
On Workspace, how long conversations are kept (90 days to indefinite) is set by the domain administrator, not by each user — a control a personal account doesn't offer.

What counts against it

On a personal Google account, a subset of conversations is reviewed by humans to improve the models, and these exchanges are kept for up to three years, even outside the 'Keep Activity' setting.
Google AI plans (Plus, Pro, Ultra) are only available to personal accounts; a Workspace account must subscribe to a separate Gemini add-on, which makes comparing prices between the two uses hard.
The price of Google AI plans only shows after a JavaScript calculation based on the user's country: we couldn't verify a reliable amount on a readable page as of writing.

A good choice for a company already on Google Workspace, which benefits from a documented data regime distinct from the general public's. Best kept strictly to the professional account: a personal account used for confidential exchanges offers none of the same guarantees.

The facts

Data hosting: Hosting not verified
Categories: AI assistants,Productivity
Data verified on: 30 July 2026

What happens to your data

Is your data used to train their models?: Depends on the plan, or an option you can turn off
Subprocessors: On a Workspace account, Google states it doesn't use content to train models outside the domain without permission, and doesn't have it reviewed by humans. On a personal account, a subset of conversations is reviewed by human reviewers, including contractors trained by Google, even when the "Keep Activity" setting is off — this review serves security and model improvement, not just training.
Retention: Personal account: 18 months by default, adjustable from 3 to 36 months, except conversations reviewed by humans, kept for up to 3 years. Workspace account: from 90 days to an indefinite period for the Gemini app, set by the domain administrator rather than each user.

Gemini in detail

Gemini is Google's conversational assistant, but its territory isn't the standalone chat: it's the office suite. Opened from Gmail, Docs, Sheets or Drive, it reads the message being drafted or the open document, and answers with that context already in hand. For a company already using Google Workspace, it's an assistant that adds onto tools already in place rather than a separate piece of software.

Two accounts, two data regimes

This is the point most users overlook, and it changes everything for a company. A personal Google account and a professional Google Workspace account don't follow the same rules once you go through Gemini. On a personal account, Google's privacy hub is clear: "A subset of conversations is reviewed by human reviewers, including Google-trained contractors, to improve Google services" — including the Gemini models themselves. These reviewed exchanges are kept for up to three years, even if the user deletes their history elsewhere. On a Workspace account, the position published by Google is different: "Your content isn't reviewed by humans or used to train generative AI models outside your domain without permission." The table Google publishes on this point is clear: Gemini doesn't use prompts, Workspace content or generated responses to train models without explicit permission, and doesn't share them with other users or organizations. A law firm that mistakenly used personal accounts for confidential exchanges benefits from none of these guarantees.

What Workspace actually changes

Beyond the principle, retention periods also differ. On a personal account, conversations are erased after 18 months by default, adjustable between 3 and 36 months — except for those kept for human review. On Workspace, retention of prompts and responses from the Gemini app ranges from 90 days to indefinite, set by the domain administrator, not by each user. Google Workspace also announces public certifications for Gemini — ISO 42001, BSI C5, FedRAMP High — and stated compatibility with HIPAA requirements, without claiming a standalone HIPAA certification.

What still needs checking

Three reservations before rolling the tool out. First, human review on the personal side can never be fully disabled: even with "Keep Activity" turned off, Google continues using conversations to respond and for security, with the help of human reviewers. Second, the commercial offer: a Workspace account doesn't subscribe to the same plans as a personal account. Google states it directly: only personal Google accounts can subscribe to Google AI plans (Plus, Pro, Ultra); a Workspace customer must add a Gemini module to their existing subscription. Two separate price catalogs, then, hard to compare line by line. Finally, the price: the page showing Google AI plan pricing calculates the amount in JavaScript based on the user's country — we couldn't read a reliable figure at the time of writing, so this entry's price stays "unknown".

For a company already on Google Workspace, turning on Gemini makes sense: the professional data regime is documented and notably more protective than that of a consumer account, and the administrator keeps control over retention. See our selection of AI assistants to compare other options. For personal use, or a free account mistakenly used for professional purposes, caution is warranted: conversations can be read by a human and kept for three years, a practice not to be mixed with client data.

Who it's for, and who it isn't

Suited for

A company already subscribed to Google Workspace that wants a built-in assistant without changing its work environment
A team that writes and summarizes most of its content directly in Gmail, Docs or Sheets

Not a fit

A professional bound by confidentiality (legal, healthcare, accounting) who would use a personal Google account rather than a Workspace account for their exchanges: the protection regime isn't the same
A company that wants a clear price before committing: neither the personal nor the professional price shows simply on a readable page

Frequently asked questions

Do my emails and Google documents train Gemini?: It depends entirely on the account type. On a professional Workspace account, Google states it doesn't use content to train models outside the domain without permission. On a personal account, a subset of conversations is reviewed by humans to improve the models, including when history isn't kept.
What's the difference between a personal Google account and a Workspace account for Gemini?: An entire difference in regime. On Workspace, content isn't reviewed by humans nor used for training outside the domain without permission, and retention is set by the administrator. On a personal account, human review exists by default and reviewed conversations are kept for up to three years.
Can Gemini read files I don't have access to at my company?: No, according to Google's Workspace documentation: the AI follows the permissions already in place. If an employee isn't allowed to see a file, Gemini can't access it either to build its answer.
How much does Gemini cost for a company on Google Workspace?: We couldn't verify a reliable amount: the personal Google AI plans and the Gemini add-on for Workspace are two separate catalogs, and their pricing pages calculate the price in JavaScript based on the country. A Workspace account has to add this module to its existing subscription rather than subscribe to a personal plan.
What's the difference with Claude or ChatGPT?: The most verifiable difference lies in integration: Gemini lives inside Gmail, Docs and Sheets rather than a separate window, which matters for a team already working in those tools. On the personal-versus-professional-account distinction, Google documents two clearly different regimes, while Claude applies the same no-training policy to both audiences.