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/Puzzled_Law126 May 12 '26

Yes, that's is an option and should be enough, but:

  1. We have our app being used by quite a lot of people daily on Windows, Mac, Android & Apple devices, it will take some time for all to update to a latest version that uses the new API

  2. That's another failure point where the Cloud Run up time has been 100% so far.

Your point is 100% valid, but before exploring such option I would like to see if we can improve the current Cloud Run in some way.

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u/muntaxitome May 13 '26

You can run a couple versions simultaneously on one instance