Eventarc pricing

Eventarc is offered in two editions: Eventarc Advanced and Eventarc Standard.

For more information, see the Eventarc overview.

Eventarc Standard pricing

The total Eventarc Standard billable charge is the combined charge of Eventarc and its transport layer, Pub/Sub.

Eventarc Standard billable component	Price (USD)
The first 50,000 chargeable events in every calendar month	Free
Events from Google sources	$0 per million events published
Events from Pub/Sub sources	$0 per million events published
Events from other sources	$1 per million events published (free while in Preview)

Note the following:

If you pay in a currency other than USD, the prices listed in your currency on Cloud Platform SKUs apply.
Usage of the Pub/Sub transport layer is billed at standard Pub/Sub rates.
For Pub/Sub sources, Eventarc can use the existing Pub/Sub topic used by the event provider when publishing events.
Events using Cloud Audit Logs incur Cloud Logging charges and event receiver services incur any applicable charges; for example, Cloud Run.
Events larger than 64 KiB are considered multiple events. Each 64 KiB portion of a payload is billed as 1 event. For example:
64.001 KiB event—2 events billed
257 KiB event—5 events billed
512 KiB event (maximum event size)—8 events billed
For events from Firestore Enterprise edition databases (in the console, "Cloud Firestore" events), there are additional charges. For more information, see Firestore Enterprise edition pricing.

Billing examples

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

Google event source example

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

Usage	Price (USD)
Usage of Eventarc	$0 per million events published for 2,592,000 events. The charge is $0.
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 total transmission rate of 4 KiBps (2 KiBps ingress and 2 KiBps egress). Over 30 days this is 0.0095 TiB of data. The billable data volume is 0.0095 TiB, and when charged at $40 per TiB, the charge is $0.38. However, the free tier of the first 10 GiB would reduce the charge to $0.
Total charge with free tier	$0 (Eventarc) + $0 (Pub/Sub) = $0
Total charge without free tier	$0 (Eventarc) + $0.38 (Pub/Sub) = $0.38

Pub/Sub event source example

Scenario: A Cloud Run service receiving one 1 MiB event every second for a month (2,592,000 events) from a Pub/Sub source.

Usage	Price (USD)
Usage of Eventarc	$0 per million events published for 2,592,000 events. The charge is $0.
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 MiBps (1 MiBps ingress and 1 MiBps egress). Over 30 days this is 4.943 TiB of data. The billable data volume is 4.943 TiB, and when charged at $40 per TiB, the charge is $197.75. However, the free tier of the first 10 GiB would reduce the charge to $197.36.
Total charge with free tier	$0 (Eventarc) + $197.36 (Pub/Sub) = $197.36
Total charge without free tier	$0 (Eventarc) + $197.75 (Pub/Sub) = $197.75

Eventarc Advanced pricing

Eventarc Advanced billable component	Price (USD)
Bus publishing	$1.00 / 1,000,000 count
Pipeline messages	$0.50 / 1,000,000 count
Pipeline transformations	$0.40 / 1,000,000 count

Note the following:

If you pay in a currency other than USD, the prices listed in your currency on Cloud Platform SKUs apply.
Event receiver services incur any applicable charges; for example, Cloud Run.
Standard Cloud Monitoring and Cloud Logging charges apply.
Events larger than 16 KiB are considered multiple events. Each 16 KiB portion of a payload is billed as 1 event. For example:
16.001 KiB event—2 events billed
65 KiB event—5 events billed
1 MiB event (maximum event size)—64 events billed

Billing example

Usage	Price (USD)
Usage of Eventarc Advanced bus	For 2.5M events published to a bus, and when charged $1.00 per million events, the charge is $2.50.
Usage of Eventarc Advanced pipeline	Assuming 100% of the messages are sent to the pipeline, and when charged $0.50 per million events, the charge is $1.25.
Usage of transformation and conversion	Assuming 100% of the messages apply either a conversion or a transformation, and 2.5M operations, and when charged $0.40 per million operations, the charge is $1.00.
Total charge	$4.75

What's next

Read the Eventarc Standard documentation.
Read the Eventarc Advanced documentation.
Learn about Eventarc solutions and use cases.

Request a custom quote

With Google Cloud's pay-as-you-go pricing, you only pay for the services you use. Connect with our sales team to get a custom quote for your organization.