I believe that GPT is an enormous step forward for the voice interface. My favorite example is to give a csv of hourly weather data and it comes back with a human-esque interpretation of it. Not just the rules engine approach that you get from websites...

    Summarize the following weather forecast for tomorrow
    
    12 am, 2° F, clear, 15 mph
    1 am, 2° F, clear, 15 mph
    2 am, 1° F, clear, 14 mph

    Tomorrow's forecast will be cold and clear with temperatures dropping from 2°F to 1°F and winds of around 15mph decreasing to 14mph.

That's a small token example - give it the full 24h and its right on.

Give it the proper data in a machine reasonable format and as it to make it into a human summary, and that's where its strength appears to be.

The problem is that GPT would be too expensive for Amazon Alexa right now.