In this YouTube video, the user talks to ChatGPT (orally) in Chinese about physical and mathematical constants. This feature looks like it would be extremely helpful for improving my Chinese listening. I'm not 100% sure it'll be worth forking out the pennies (maybe there's limits or something) so I'd like to see the precise specifications.
Question: What feature is this YouTube video using when talking orally with ChatGPT in Chinese?
The video mentions ChatGPT Turbo, which led me to this, but I don't think this is what I'm after: I want to have an oral conversation with ChatGPT.