Chatgpt for speech practice??

Chatgpt for speech practice?? Has anyone here tried using the Chatgpt voice assistant for practicing speaking. I am finding them really helpful because they have more patience than your average person. For the first time I am having full length conversations of sometimes more than 20 mins of length. It's great help for practicing speaking skills and stuttering techniques. Right now they lack a bit of personality so it still feels unauthentic. I wonder if someone can design a speech therapist AI that can actually talk to you and then hear you talk.