This package includes clients for multiple versions of the Text-to-Speech API. By default, you will get v1, the latest GA version.
gapic/v1/api gapic/v1/types
If you are interested in beta features ahead of the latest GA, you may opt-in to the v1.1 beta, which is spelled v1beta1. In order to do this, you will want to import from google.cloud.texttospeech_v1beta1 in lieu of google.cloud.texttospeech.
An API and type reference is provided for the v1.1 beta also:
gapic/v1beta1/api gapic/v1beta1/types
Note
The client for the beta API is provided on a provisional basis. The API surface is subject to change, and it is possible that this client will be deprecated or removed after its features become GA.