Supported locales in Custom Speech Service


The new Speech Service and SDK is replacing the Custom Speech Service, which will no longer work starting January 15, 2019. For information on switching to the Speech Service, see Migrating from the Custom Speech Service to the Speech Service.

The Custom Speech Service currently supports customization of models in the following locales:

Model Type Language Support
Acoustic Models US English (en-US)
Language Models US English (en-US), Chinese (zh-CN)

Although Acoustic Model customization is only supported in US English, importing Chinese acoustic data is supported for the purposes of offline testing of customized Chinese Language Models.

The appropriate locale must be selected before taking any action. The current locale is indicated in the table title on all data, model, and deployment pages. To change the locale, click the “Change Locale” button located under the table’s title. This will take you to a locale confirmation page. Click “OK” to return to the table.

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