API: SSML is no longer mandatory for speech synthesis

SSML is a powerful tool that gives you precise control over how your text is being pronounced. But it's an extra hassle that to deal with, and it's not strictly necessary for every use-case, especially for simple scenarios.

Now, you can send you input param (to /v1/audio/speech and /v1/audio/stream) as plain text, and we will wrap it in SSML for you.