The analogy

Think of a gym that records its cameras "to improve the service". The footage stays, and by default it gets reviewed. You can ask to be excluded from the analysis recordings, and in certain rooms, the private ones, there are no cameras at all. But under no circumstances would you leave your wallet open on the bench: the safest way to protect something is not to expose it.

AI chats work like this. By default they are kept and may be used to "train" the system; you can ask to be excluded and use the "private rooms", that is, the temporary chats. But the most solid defense is not putting in what you don't want to come out.

How it really works

By default, on the personal accounts of many platforms, conversations may enter the material with which the models are improved, and this often holds for paid plans too, unless you intervene. Each one, however, offers an option to exclude your content from training, which applies to subsequent conversations. There is also temporary chat: it doesn't end up in the history and isn't used for training, but it's usually kept for a limited period for safety purposes before being deleted. So even when you opt out, technical retention for a certain time usually exists.

What you can do in practice

  • Look in the settings for the option that excludes your content from model training and turn it on: it applies to the chats you open from that moment.
  • For a conversation that must leave no trace, use temporary chat: it doesn't stay in the history and doesn't feed training.
  • Manage the history: delete the conversations you don't need, and remember that long-term memory is cleared separately, deleting the chat isn't enough.
  • The strongest defense is upstream: don't paste in sensitive data — passwords, ID documents, medical data or data about other people, company secrets.

A common misconception

People believe that paying for the subscription guarantees privacy, that "if I pay, they don't use my data". Often it isn't so: on many personal paid plans, training on your content stays active by default, and has to be turned off by hand just like in the free version. The price gives you more power and fewer limits, not automatically more privacy. Privacy is set, not bought.

Frequently asked questions

Does someone read my chats?

They aren't read one by one by a person in real time, but they may be kept, analyzed in aggregate form to improve the system and, in some cases, reviewed by staff for safety reasons or because of reports. Treat them as data recorded on a company's server, not as a private diary.

Does turning off training also delete what I've already written?

Generally, exclusion applies from now on, to new conversations, not retroactively to the whole history. For the past you have to act on the history and the memory, deleting them, taking into account the technical retention times.

Is the temporary chat really "gone"?

It isn't saved in the history nor used for training, but it's normally kept for a short period for safety purposes, then deleted. It's far more private than a normal chat, but "temporary" doesn't mean "evaporated instantly".

If I delete a conversation, is it as if it had never existed?

No, and that's the illusion that makes you lower your guard. Deletion starts the removal, but there is usually a technical window in which the data is kept for safety before it really disappears; and long-term memory, if active, keeps its notes about you anyway until you delete them separately. The only data that risks nothing is the data you never wrote.