Neither Wavflow nor Amazon Polly offers a free trial.
Pricing details for both Wavflow and Amazon Polly are unavailable at this time. Contact the respective providers for more information.
Wavflow offers several advantages, including High accuracy results, Realistic human-like voice synthesis, Intuitive user interface, No subscription required, Credit based system and many more functionalities.
The cons of Wavflow may include a Credit based system, No subscription option, May be expensive, Potentially limited voice options. and No API mentioned
Amazon Polly offers several advantages, including Natural sounding voices, Custom lexicons, Integration with AWS services, Variety of customization options, Supports multiple languages and many more functionalities.
The cons of Amazon Polly may include a Limited languages for speech, Requires AWS account, Complex integration with other services, Limited customization options. and Expensive for high usage