My main use case for OpenAI/ChatGPT at this point is realtime voice chats.
OpenAI has done a pretty great job w/ realtime (their realtime API is pretty fantastic out of the box... not perfect, but pretty fantastic and dead simple setup). I can have what feels like a legitimate conversation with AI and it's downright magical feeling.
That said, the output is created by OpenAI models so it's... not my favorite.
I sometimes use ChatGPT realtime to think through/work through a problem/idea, have it create a detailed summary, then upload that summary to Claude to let 4.5 Opus rewrite/audit and come up with a better final output.
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ME: "OK, so, I have a question about the economics of medicine. Uh..." [pauses to gather thoughts to ask question]
GEMINI: "Sure! Medical economics is the field of..."
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And it's aggravated by the fact that all the LLMs love to give you page-long responses before it's your turn to talk again!
But then the actual flow of the conversation is deeply semantic in the best conversations, and the rules are very much a "dance" or a negotiation between partners.
It also implies that being the person who has something to say but is unable to get into the conversation due to following the conversational semantics is akin to going to a dance in your nice clothes but not being able to find a dance partner.