I also noticed the voice, but it sounded really weird when the robot started answering with something that sounded like hesitation. Is it really THAT real? I cannot imagine a computer hesitating before starting a sentence.
Hesitation is a personafication. Kruel.ai is built the same and if you use chatgpt with voice the same there. Using pauses , even neuances like ah and um. These are by design to make them feel more human 
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Thanks for the clarification. Really interesting where we are getting to…
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Stuttering perfected it…
Very nice …