Just released v1.1 with native macOS support (Universal2 for Apple Silicon & Intel).
You can grab it here: https://github.com/PhilNikitin/godot-kokoro/releases
Let me know if it runs smoothly on your machine!
Thank you very much, I have installed it, the classes are all available without errors. But the TextToSpeech node from the test scene fails to load the model voices and tokens. They are located in the folder as per the guide.
