Are we charged for failed speech synthesis tasks?

Hello,

NO ,you will only be charged for a StartSpeechSynthesisTask if it succeeds. If the task fails due to errors like InvalidS3KeyException or ServiceFailureException, you will not be charged for that attempt. The Speech Synthesis task needs to be completed successfully in order to generate billable output. Failed or errored tasks do not result in charges. As with all AWS services, you only pay for successful requests and for the resources actually used.

Let me know if you have any other questions!

Thanks

Abhinav