The following status codes will show up as an HTTP Status Code with an error in the body.

Status CodeMeaning
200Success.
401Unauthorized, see authentication docs here.
402Character quota exceeded. Upgrade your account or turn on usage-based-billing.
429Too many requests, see rate limits here.
500Internal server error, please try again or contact us. If your Generate TTS request fails with this error, characters are not counted.
Rate LimitsGenerate TTS