An in-app notification pop-up will alert you to the change. You can opt out in the pop up.
I was able to opt out right now by going to the Privacy section of Settings.
It doesn’t take effect until September 28th. The app will apparently prompt people to review the new terms and make a decision before then.
Only applies to new or resumed sessions if you do review the new terms and don’t turn it off. The angry comments about collecting data from customers and then later using it without permission are not correct. You would have to accept the new terms and resume an old session for it to be used.
Does not apply to API use, 3rd party services, or products like Claude Gov or Claude for Education.
Changing the link to the actual source instead of this perplexity.ai link would be far more helpful.