The demo and copy are great. Not everyone will agree it is "better" because that's subjective but your website does a good job of telling people it is better and the demo is good enough that some people will accept what they see/read/hear. :clap:

Your heading makes it seem like you want the direct comparison to AWS polly so maybe add a table to directly compare different aspects of your product vs aws that make it better. Sound quality is just one attribute to compare. What about SDKs, limits, code samples, use cases, more nitty gritty sound comparison details, etc.

Pricing should also be more transparent if you want to compare aws to yours - what maths did you do to get 8x cheaper because at first glance that is misleading.