I built a talking chatGPT with google cloud speech, whisper, and the openAI API about a week before openAI announced the GPTPlus premium rollout where you can talk to chatGPT and hear it speak back. Here's a series of youtube videos that walk you through the code.

https://www.youtube.com/playlist?list=PLC_E8ugf8_OyaTl2c4NeY...

Could be greatly improved upon - let me know if you end up doing anything cool with it.