Good TTS feels like it is something that should be natively built into every consumer device. So the user can decide if they want to read or listen to the text at hand.

I'm surprised that phone manufacturers do not include good TTS models in their browser APIs for example. So that websites can build good audio interfaces.

I for one would love to build a text editor that the user can use completely via audio. Text input might already be feasible via the "speak to type" feature, both Android and iOS offer.

But there seems to be no good way to output spoken text without doing round-trips to a server and generate the audio there.

The interface I would like would offer a way to talk to write and then commands like "Ok editor, read the last paragraph" or "Ok editor, delete the last sentence".

It could be cool to do writing this way while walking. Just with a headset connected to a phone that sits in one's pocket.