There is no additional charge for AWS Batch. You pay for AWS resources (e.g. EC2 instances or AWS Lambda functions) you create to store and run your application. You only pay for what you use, as you use it; there are no minimum fees and no upfront commitments.
Additional pricing resources
TCO Calculator
Calculate your total cost of ownership (TCO)
Simple Monthly Calculator
Easily calculate your monthly costs with AWS
Economics Resource Center
Additional resources for switching to AWS
Learn how to get started with AWS Batch