Pricing

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

Note that Speech Synthesis Markup Language (SSML) tags are included in the character count for billing purposes. For example, this input counts as 79 characters, including the SSML tags, newlines, and spaces:

<speak>
  <say-as interpret-as="cardinal">12345</say-as> and one more
</speak>

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

Note: The number of characters will be equal to or less than the number of bytes represented by the text. This includes alphanumeric characters, punctuation, and white spaces. Some character sets use more than one byte for a character. For example, Japanese (ja-JP) characters in UTF-8 typically require more than one byte each. In this case, you are only charged for one character, not multiple bytes.

Google Cloud Platform costs

If you use other Google Cloud Platform resources in tandem with the Text-to-Speech, 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.