Seconded, AWS Polly should be good, there's also Bing Speech https://azure.microsoft.com/en-us/services/cognitive-services/speech/ https://azure.microsoft.com/

Seconded, AWS Polly should be good, there's also Bing Speech https://azure.microsoft.com/en-us/services/cognitive-services/speech/ https://azure.microsoft.com/en-us/services/cognitive-service... Google WaveNet promises even better audio, but it's not available yet. In my experience, Amazon is "good enough". https://deepmind.com/blog/wavenet-generative-model-raw-audio/ https://deepmind.com/blog/wavenet-generative-model-raw-audio...