Its pretty good. I've been using Amazon's Polly which so far to me has been the most realistic (https://aws.amazon.com/polly/ https://aws.amazon.com/polly/). I

Its pretty good. I've been using Amazon's Polly which so far to me has been the most realistic (https://aws.amazon.com/polly/ https://aws.amazon.com/polly/). I feel like Polly still has an edge with variety of voices.