API Gateway:Billing details

Instance fees

Data processing fees

When you create an AI Gateway instance, you can select a network type: Internet, private network, or Internet + private network. Data processing for different network types is billed separately. Within a billing cycle, the data processing volume is the total volume of request and response data.

Request CU fees

A Capacity Unit (CU) is the smallest unit used to measure the resource consumption of a Serverless instance.

CU fees are charged hourly. Usage for less than one hour is billed as one hour. The minimum billing granularity is 1,000 CUs, and usage is rounded up to the nearest 1,000 CUs. If the total CUs used in an hour is less than 100,000, you are billed for 100,000 CUs.

Hourly CU fee = max{Actual CUs for the hour, 100,000} × CU price

Billing examples:

• If the actual number of CUs used in an hour is 50,200, which is less than 100,000, the billable CU count for that hour is 100,000.

• If the actual number of CUs used in an hour is 150,200, which is greater than 100,000, the final billable CU count for that hour is 151,000. This is because the minimum billing granularity is 1,000 CUs.

CU measurement rules for different APIs

The CUs for a single API call are determined by the CU coefficient of the API type and the payload size. The formula is as follows:

CUs for a single API call = CU coefficient × CEILING{(Request payload + Response payload) / 512 KB}

The CU coefficients for each API type are as follows:

• Model API: 10

• MCP Server: 5

• Agent API: 2

Billing examples:

1. For a Model API request with a 100 KB request payload and an 800 KB response payload, the CUs for this request are calculated as: 10 × CEILING{(100 + 800) / 512} = 20

2. For an MCP Server request with a 50 KB request payload and a 300 KB response payload, the CUs for this request are calculated as: 5 × CEILING{(50 + 300) / 512} = 5

CU price