AWS CodeBuild uses simple pay-as-you-go pricing. There are no upfront costs or minimum fees. You pay only for the resources you use. You are charged for compute resources based on the duration it takes for your build to execute. The per-minute rate depends on the selected compute type.
Build Duration is calculated in minutes, from the time you submit your build until your build is terminated, rounded up to the nearest minute.
AWS CodeBuild offers three compute instance types with different amounts of memory and CPU. Charges vary by the compute instance type that you choose for your build.
The AWS CodeBuild free tier includes 100 total build minutes per month with the general1.small or arm1.small instance types. The CodeBuild free tier does not expire automatically at the end of your 12-month AWS Free Tier term. It is available to new and existing AWS customers.
You may incur additional charges if your builds transfer data or use other AWS services. For example, you may incur charges from Amazon CloudWatch Logs for build log streams, Amazon S3 for build artifact storage, and AWS Key Management Service for encryption. You may also incur additional charges if you use AWS CodeBuild with AWS CodePipeline.
If you execute 100 builds in one month using build.general1.small where each build runs for 5 minutes, then your charges would be calculated as follows:
Monthly build charges
Build minutes = 100 builds * 5 minutes = 500 build minutes
Build minutes – Free tier build minutes = Monthly billable build minutes = 500 – 100 = 400 build minutes
Monthly build charges = 400 build minutes * $0.005 = $2