Pricing

The Cloud Text-to-Speech API is priced monthly based on the amount of characters to synthesize into audio sent to the service.

Pricing Table

Feature Monthly free tier Paid usage
Standard (non-WaveNet) voices 0 to 4 million characters $4.00 USD / 1 million characters
WaveNet voices 0 to 1 million characters $16.00 USD / 1 million characters

Google Cloud Platform Costs

If you use other Google Cloud Platform resources in tandem with the Text-to-Speech API, such as Google App Engine instances, then you will also be billed for the use of those services. See the Google Cloud Platform Pricing Calculator to determine other costs based on current rates.

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Cloud Text-to-Speech API