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Application Real-Time Monitoring Service:Pay-as-you-go billing for Synthetic Monitoring

Last Updated:Mar 11, 2026

Synthetic Monitoring Pro Edition uses pay-as-you-go billing. You are charged based on the number of synthetic tests you run. Bills are generated daily and fees are deducted from your Alibaba Cloud account balance.

Important

Since June 1, 2024, Synthetic Monitoring no longer accepts new activations for pay-as-you-go or subscription billing. This page applies only to existing users. For details, see Discontinuation of the activation of Synthetic Monitoring.

Billing

Free quota

Every month, Synthetic Monitoring Pro Edition provides 3,000 free synthetic tests for detection points deployed in data centers or Lastmile.

Important

Synthetic tests initiated from regions outside the Chinese mainland consume quota at five times the actual number of tests. For example, 200 tests from a China (Hong Kong) detection point consume 1,000 tests from your monthly quota.

Pricing

The unit price per synthetic test depends on the detection point type and geolocation.

Detection point typeGeolocationUnit price (USD per test)
PC (data center and Lastmile)Chinese mainland0.0046
PC (data center and Lastmile)Regions outside the Chinese mainland0.023
Cloud hostChinese mainland0.00015
Cloud hostRegions outside the Chinese mainland0.00015
Mobile device (3G and 4G only)Chinese mainland0.0124
Mobile device (3G and 4G only)Regions outside the Chinese mainlandUnsupported

Billing example

A task uses two PC detection points in the Chinese mainland and runs once every 5 minutes (12 times per hour). The daily cost before applying the free quota:

Daily tests = 24 hours x 12 tests/hour x 2 detection points = 576 tests
Daily cost  = 576 tests x USD 0.0046/test = USD 2.6496

Over a 30-day month, this task generates 17,280 tests total. After subtracting the 3,000-test monthly free quota, the billable amount is 14,280 tests.

Monthly cost = 14,280 tests x USD 0.0046/test = USD 65.688

Billing cycle

The billing cycle for ARMS is one day. Starting at 00:00 each day, ARMS calculates the resource usage from the previous day. Bills are typically generated on the morning of the settlement day. After a bill is generated, the system automatically deducts the fees from your account if your balance is sufficient. You can view your bills on the Expenses and Costs page and your resource usage in the ARMS console. For more information, see Resource usage and bills.

View bills and usage

Log on to the Expenses and Costs to view your bills, or check resource usage in the ARMS console. For details, see Query bills and resource usage.

Overdue payments

For the impact of overdue payments on pay-as-you-go resources, see Overdue payments.