I thought openai don't use any user data if we opt out of training and via api?

That is correct. It is possible they didn't opt out and given the timeline and anonymization of data unclear whether a particular conversation would have made it into the training set if they hadn't.

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luke5441 6 hours ago | parent [-]

Easy to ask for the account used to see if its usage went into training data. Also easy to say "Knowledge cut-off of the used model was date X".

That they don't is telling.

	▲	ImaCake 3 hours ago \| parent [-]
		Maybe they didn't ask or the anthropic people said no? Plenty of other explanations here.