I’ve found Pi to be useful for this. The app has a voice to voice mode that works pretty well. The speech synthesizer has some tone and inflection variability,

I’ve found Pi to be useful for this. The app has a voice to voice mode that works pretty well. The speech synthesizer has some tone and inflection variability, which makes it feel more like a conversation. The personality can be kinda over enthusiastic, but it’s way better than just a raw voice to text approach. It’s pretty good for exploring a topic. You have to double check references, but the basic orientation is useful. https://pi.ai/ https://pi.ai/