Eventarc pricing

Eventarc has the following billable components:

  • Events Core
  • The Pub/Sub transport layer

Eventarc architecture

Events from Google Cloud sources using Cloud Audit Logs use Events Core and Pub/Sub as the transport layer. Events from custom sources only use Pub/Sub as the transport layer.

The total Eventarc billable charge is the combined charge of Events Core and Pub/Sub.

Events using Cloud Audit Logs incur Cloud Logging charges and event receiver services on Cloud Run incur Cloud Run charges.

Events Core pricing

Events from Google Cloud sources are charged at $0/million events published.

Transport layer pricing

Usage of the Pub/Sub transport layer is billed at standard Pub/Sub rates.

Billing examples

These examples assume events using Cloud Audit Logs are typically 2KiB.

Google Cloud event source example

Scenario: A Cloud Run service receiving one 2 KiB per second for a month (2,592,000 events) at a rate of 2 KBps from a Google Cloud source such as Cloud Storage using Cloud Audit Logs.

Usage of Events Core: US$0/million events published for 2,592,000 events. The charge is US$0.

Usage of the Pub/Sub transport layer: Assuming one Pub/Sub topic with one subscriber that is consuming all generated events.

Pub/Sub has a total transmission rate of 4 KBps (2 KBps ingress and 2 KBps egress). Over 30 days this is 0.0095 TiB of data. The first 10GB is part of the free tier; the remaining billable data volume is 0 TiB, and the charge is US$0.

Total charge: US$0

Custom event source example

Scenario: A Cloud Run service receiving one 1024KiB event every second for a month (2,592,000 events) at a rate of 1 MBps from a custom source.

Usage of Events Core: not applicable.

Usage of the Pub/Sub transport layer: Assuming one Pub/Sub topic with one subscription and the subscriber is consuming all generated events.

Pub/Sub has a transmission rate of 2 MBps (1 MBps ingress and 1 MBps egress). Over 30 days this is 4.894 TiB of data. The first 10GB is part of the free tier; the remaining billable data volume is 4.884 TiB, and when charged at US$40 per TiB, generates a billable charge of US$195.36.

Total charge: US$195.36

What's next

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