Billing overview

How billing works

Function Compute measures seven resource usage items per function invocation. These items are not billed directly — they are converted to CU usage using fixed conversion factors, then billed based on monthly CU price tiers.

Resource usage (invocations, vCPU, memory, disk, GPU)
    × CU conversion factor
    = CU usage
    × unit price (tiered monthly)
    = cost

Starting August 27, 2024, the original billable items of Function Compute, including the number of function invocations, active vCPU usage, idle vCPU usage, memory usage, active GPU usage, idle GPU usage, and disk usage, are no longer used. The preceding resource usage is converted to CU usage based on the conversion factors. You are charged based on the prices of CU usage.

Billing cycle

Function Compute bills on an hourly basis. CU usage per function per hour is rounded up, then summed across all functions to produce the total hourly CU usage. If you have a resource plan, it offsets CU usage first. After the resource plan is exhausted or expires, hourly fees apply.

CU usage is priced monthly on a tiered basis — the higher your monthly total, the lower the per-unit price.

CU pricing

Starting August 27, 2024, Function Compute uses CU usage as the sole billable item for resource consumption.

CU conversion factors

Each resource usage item converts to CU usage using a fixed factor: resource usage × conversion factor = CU usage.

Resource usage items

The following table lists the seven resource usage items, their units, and calculation formulas. These items feed into CU conversion and do not appear directly on your bill.

Execution duration and idle duration

Idle duration

For provisioned instances with idle mode enabled, an instance enters the idle state when no requests are being processed. Idle resource usage is calculated as the configured specification multiplied by the idle duration.

• CPU instances: Idle mode is enabled by default.

• GPU-accelerated instances: Idle mode is disabled by default. Enable it manually if needed.

When a provisioned instance is idle, Function Compute freezes its GPU or vCPU resources and charges at significantly lower rates.

Fee formula for provisioned instances with idle mode enabled:

Fee = (total idle resource usage × idle unit price)
    + (total active resource usage × active unit price)

For active-only provisioned instances (idle mode disabled):

Billing examples

The following examples show how to calculate monthly costs for different workload types and scales. Find the example closest to your usage pattern to estimate your costs.

FAQ

• Am I charged after I purchase a free trial plan?

• After I purchase a trial plan, my account has overdue payments. How do I view the overdue payments, and why do I have overdue payments?

• Why am I still being charged after I suspend Function Compute?

• What resource usage items are involved in the running of GPU-accelerated instances?

• Can I use my resource plan to offset fees across regions?

• How do I unsubscribe from Function Compute if I have an overdue payment and no longer want to use the service? How do I settle an overdue bill?

• Can I unsubscribe from notifications of Function Compute?