Charge cards — cards that don’t have a set limit like a credit card but must be paid off each month — have largely gone by the wayside. Although The Platinum Card and other premium Amex cards have flexible spending limits, the issuer’s Pay Over Time feature lets you revolve a balance (with interest charges) by toggling the setting in your account.
Since that means the American Express Platinum Card is now more of a hybrid solution, it’s technically a “card with a flexible spending limit” instead of a true credit or charge card.