API: new model, simba-turbo , and Multilingual support

We now support two voice synthesis models. The original, known as simba-base, now supports multilingual inputs, see for the list of supported languages . The new model, simba-turbo, is English-only, but produces the audio faster.

You can select the model by passing the model param to our audio APIs . Additionally, you can pass the language param, when your text is 100% in one language (otherwise leave it empty and let our system detect the languages).