Note by @fastfinge

@hosford42 Also, if you enjoy comparing modern AI efforts with older rule-based text to speech systems, and listening to the AI fail hard, this text is wonderful for that. As far as I'm aware not a single text to speech system, right up to the modern day, can read this one hundred percent correctly. github.com/mym-br/gnuspeech_sa/blob/master/the_chaos.txt

But eloquence gets the closest, gnuspeech second, espeak third, dectalk fourth, and every AI system I've tried a distant last.