I'm testing it in my business. I'm in a unique position of running a business totally unrelated to software dev, handled customer service personally for 15+ years. I developed a AI backed live chat app first a little over a year ago. It has handled ~6,000 chats since then so I have a ton of valuable data on what does and doesn't work (spoiler alert, it works really well).

I'm taking that information and building a voice version. I'm taking a lot of time to make sure the phone version works naturally and that is can address most common things people call in about. Just like my chat version, GPT 4o was barely good enough to do what I needed. Since GPT 5 and on it has been more than adequate. I expect the same thing over time with voice, Open AI is going to release the GPT-live to the API which is a noticeable improvement.

Some people are just offended at the idea of talking to an AI chatbot voice or phone, no matter how good it is. I don't know how good this Kinney Drugs bot was, but it's very easy to make something that works but ends up being very frustrating for customers.