> This is expected these days for threads which may make the provider liable. [...]

> They're being retained for legal purposes.

It’s a significantly wider usage than that:

A subset of chats are reviewed by human reviewers (including Google’s trained service providers) to help improve Google services. These include Gemini models, other generative AI models that power Gemini Apps, and technologies that help reduce unintended activations.

Reviewers assess if Gemini Apps’ responses were low-quality, inaccurate, or harmful. They also suggest better responses. We use their suggestions to help our models respond better in the future.

That’s in addition to the liability language:

Chats are also reviewed to keep Gemini safe and secure for everyone and to address violations of the Google Terms of Service, including the Generative AI Prohibited Use Policy. Reviewed chats are retained for up to three years.

https://support.google.com/gemini/answer/13594961?hl=en#huma...

Some important things to take away from this:

* They’re claiming to use chat transcripts for both training and for human review to improve training, not just for liability.

* They don’t define “subset”. It could be most chats.

* They make no promises of anonymizing content, just “disconnecting” it from the account.

* This is happening for free and paid user subscriptions, by default, and the only way to stop it is to turn off chat history altogether.