Yes, but it's possible to not provide any identifying data to ppq.ai, you just have a token, and pay with lightning.

You can give them an email, but it's not necessary.

Couldn't they still build a profile for you based on your interactions (kinda like google search does with your searches or browser fingerprinting)?

In which case you still end up with a service that can do something with your data. Self hosted seems better (not that I currently do it...).

Scoresby

Reminder: you don't control the records of your chats with LLMs

What's your thoughts about using something like ppq.ai? (Pay Per Query, pay with lighting).