aws polly describe-voices
Returns the list of voices that are available for use when requesting speech synthesis. AWS CLI reference
4 options Its page in the AWS CLI reference
Options
--engineSpecifies the engine (standard, neural, long-form or generative) used by Amazon Polly when processing input text for speech synthesis.--include-additional-language-codesBoolean value indicating whether to return any bilingual voices that use the specified language as an additional language.--language-codeThe language identification tag (ISO 639 code for the language name-ISO 3166 country code) for filtering the list of voices returned.--next-tokenAn opaque pagination token returned from the previous DescribeVoices operation.