The Google Translation API is priced monthly based on usage. Translation usage is calculated in millions of characters, where 1 million = 106 characters.
Prices per month
|-||0-1.5 billion characters||1.5 billion+|
|Translation||$20 per 1,000,000 characters*||$15 per 1,000,000 characters*|
|Language Detection||$20 per 1,000,000 characters*||$15 per 1,000,000 characters*|
* Price is per character sent to the API for processing, including whitespace characters. Empty queries will be charged for one character. Google charges on per character basis, even if the character is multiple bytes, where a character corresponds to a (code-point). For example, translating "こんにちは" to English counts as 5 characters for the purposes of billing.
Prices are 'pro rata' (proportional and incremental). Charges are scaled to the number of characters actually provided to the service. If you send 75,000 characters for processing within a month, for example, you will be charged $1.50.
This pricing is for applications on personal systems (e.g., phones, tablets, laptops, desktops). Please contact us for approval and pricing to use the Speech API on embedded devices (e.g., cars TVs, appliances, or speakers).
Google Cloud Platform costs
Note that you may be charged for other Google Cloud Platform resources used in your project, such as Google Compute Engine instances, Google Cloud Storage, etc. For full information, consult our Google Cloud Platform Pricing Calculator to determine those separate costs based on current rates.