This isn’t an AWS product, it’s Amazon (the non-AWS side). I don’t think this has anything to do with AWS billing.
AWS already has Amazon Q, which is its chatbot offering for AWS customers.
AWS already has Amazon Q, which is its chatbot offering for AWS customers.
Amazon Nova Chat is a different product that uses Nova, buts it not AWS. Notice that if you try to use Nova Chat, you log in using your Amazon.com account and not an AWS account.