The limit of 1000 requests per minute for the Google Text-to-Speech (TTS) API is typically applied per project. This means that each project you create within your Google Cloud Platform (GCP) account will have its own quota for TTS API calls.
You can request an increase in your API usage quotas by going to the Google Cloud Console and navigating to the API Dashboard. From there, select the specific API you’re interested in (in this case, the Text-to-Speech API), and then select “Quotas” to request an increase.
Increasing quotas might involve enabling billing for the project and paying for additional usage beyond the free tier. Google might offer higher quotas or customized quotas based on your paid usage.
Creating multiple accounts might not be the ideal solution because managing multiple accounts can be cumbersome, and Google might have policies against abusing multiple accounts to circumvent quotas.
Always ensure that your usage complies with Google’s terms of service and acceptable use policies to avoid any potential issues with your account or services.