Microsoft's Copilot is in almost everything the company develops, including its Edge web browser's sidebar, which I most frequently use. While it's primarily a run-of-the-mill AI assistant for most text queries, it also has a voice, and you can chat to Copilot with any device with a built-in or external microphone, just like with its mobile app. While it was a bit slower off the starting line than OpenAI's conversational and subscription-only ChatGPT Plus, Microsoft Copilot is (mostly) free to use on your desktop and sounds convincing enough.
I might be in the minority as someone who enjoys using Copilot, but it's better than you think. Besides, the Copilot Android widget sits on my phone's home screen, so I'm regularly talking to it.
