Monthly vs. yearly billing
You can pay for your plan either monthly or yearly, and both give you the same monthly token allowance. The difference is in flexibility and price.
Monthly
Monthly billing charges you each month. It is the most flexible option, with no long commitment, so it suits you if you want to keep things month to month. Monthly plans are not refundable for unused time.
Yearly
Yearly billing charges for the year up front, at a lower effective rate than paying monthly. It also comes with a 14-day money-back guarantee, subject to minimal usage, so you can try it with some protection.
Switching and price changes
You can switch cadence in Plan & Billing whenever you like. And if prices ever change, you will get at least 30 days' notice beforehand, so there are no surprises on your bill.