With Coqui.ai shutting down it's studio and API it looks like they are reinvesting their efforts into their XTTS models and framework.
A recent update to their GitHub also has a no-code gradio ui to facilitate fine-tuning and inferencing locally. <a href="https://github.com/coqui-ai/TTS/releases/tag/v0.21.3">https://github.com/coqui-ai/TTS/releases/tag/v0.21.3</a>