Billing Modes

The compute resources used in ModelArts can be billed on a pay-per-use or yearly/monthly basis.

Pay-per-use: allows you to make a subscription or unsubscription at any time. This billing mode can be used when you select resources for creating a development environment, creating a training job, or deploying a model as a service.

Yearly/Monthly: ModelArts allows you to purchase resources on a yearly or monthly basis. This mode provides a larger discount than pay-per-use.
- Public resource pools can only be billed in pay-per-use mode.
- Only dedicated resource pools can be billed on a yearly or monthly basis. The dedicated resource pool functions and purchase methods vary depending on regions. For details, see the management console.
  To purchase a dedicated resource pool, log in to the ModelArts management console, click Dedicated Resource Pools in the navigation pane, and click Create on the Dedicated Resource Pools page. If Dedicated Resource Pools is unavailable on the ModelArts management console or the yearly/monthly billing mode is unavailable on the page for purchasing a dedicated resource pool, the current region does not support the yearly/monthly billing mode.

**Table 1** Billing modes
Billing Mode	Yearly/Monthly	Pay-per-use
Payment Method	Prepaid Billed by the purchase period specified in your order	Postpaid Billed by usage duration of resources
Billing Period	Purchase duration specified in your order	Billed by the second. A bill is generated on the hour.
Changing a Billing Mode	Yearly/Monthly billing can be changed to pay-per-use, which is only supported by the old-version dedicated resource pools for development or training. The pay-per-use mode takes effect only after a yearly/monthly period expires. For details about how to change the billing mode from yearly/monthly to pay-per-use, see Switching the Dedicated Resource Pool Billing Mode.	Pay-per-use billing can be changed to yearly/monthly, which is only supported by the old-version dedicated resource pools for development or training. The billing mode can be changed to yearly/monthly only if there are pay-per-use consumption records. For details about how to change the billing mode from pay-per-use to yearly/monthly, see Switching the Dedicated Resource Pool Billing Mode.
Application Scenarios	This cost-effective mode is ideal when the duration of resource usage is predictable. This billing mode is recommended for long-term usage.	This mode applies if resource requirements fluctuate. You only need to pay for what you have used.