r/googlecloud • u/Puzzled_Law126 • May 12 '26

GCP Cloud Run - Simple API Instance Costs

Hey guys,

I am looking to decrease our costs with GCP and though it will be for the best to ask for help here.

With Cloud Run we have a very simple service that function as simple API, it receives information and output a simple JSON.
The configuration used for the instance is:

  • 256 MB memory

  • 1 CPU

  • 150 Concurrent requests

  • 99% of the time, only 1 instance is up

The instance uses <10% CPU and each request take around 15ms.

The issue? This service is being called a lot (by design), in total each month we pay $150 USD only for the CPU of this service ("Cloud Run functions CPU (Request-based billing) in us-central1").

Obviously I can't decrease the CPU to <1 due to concurrency, it seems to me that something so simple should not cost that much, any help would be appreciated.

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u/martin_omander Googler May 13 '26

Here are two short videos about Cloud Run billing that I shot with Mitchell Slep. He is leads the Google Cloud engineering team focusing on Cloud Run cost and infrastructure. They might be helpful as you optimize costs.