If you plan to use Gemini, be warned, here are the usual Big Tech dragons:
Please don’t enter ...confidential info or any data... you wouldn’t want a reviewer to see or Google to use ...
The full extract of the terms of usage:
How human reviewers improve Google AI
To help with quality and improve our products (such as the generative machine-learning models that power Gemini Apps), human reviewers (including third parties) read, annotate, and process your Gemini Apps conversations. We take steps to protect your privacy as part of this process. This includes disconnecting your conversations with Gemini Apps from your Google Account before reviewers see or annotate them. Please don’t enter confidential information in your conversations or any data you wouldn’t want a reviewer to see or Google to use to improve our products, services, and machine-learning technologies.
Conversations that have been reviewed or annotated by human reviewers (and related data like your language, device type, location info, or feedback) are not deleted when you delete your Gemini Apps activity because they are kept separately and are not connected to your Google Account. Instead, they are retained for up to three years.
Emphasis on "retained for up to three years" even if you delete it!!
If i'm not wrong, Chatgpt states clearly that they don't use user data anymore by default.
Also, maybe some services are doing "machine learning" training with user data, but it is the first time I see recent LLM service saying that you can feed your data to human reviewers at their will.
I believe this is out of date. There’s a very explicit opt in/out slider for permitting training on conversations that doesn’t seem to affect conversation history retention.
You can use a paid tier to avoid such issues. Not sure what you're expecting for those "experimental" models, which is in development and needs user feedback.