For anyone using these models for anything remotely sensitive, keep in mind that Anthropic says [0]:

> We retain inputs and outputs for up to 2 years and trust and safety classification scores for up to 7 years if your chat is flagged by our automated trust and safety systems as violating our Usage Policy.

And, since those automated systems apparently have a ludicrous false-positive rate, you should assume that your inputs and outputs are being retained for 2 years even if you are doing nothing that any reasonable person would consider to be problematic.

Oh, and they'll train on that data [1]:

> We will use your chats and coding sessions (including to improve our models) if:

>You choose to allow us to use your chats and coding sessions to improve Claude, learn more here

> Your conversations are flagged for safety review (in which case we may use or analyze them to improve our ability to detect and enforce our Usage Policy, including training models for use by our Safeguards team, consistent with Anthropic’s safety mission)

It appears that the usual controls (including for businesses) to prevent Anthropic from training on your data will not apply.

[0] https://privacy.claude.com/en/articles/7996866-how-long-do-y...

[1] https://privacy.claude.com/en/articles/10023580-is-my-data-u...