Supported Languages

The table below shows which languages are supported by the AssemblyAI API and the Playground, their language_code values, and the features available for that language.

The Playground includes automatic language detection so it can route your audio to the appropriate model for transcription. If your audio contains multiple languages, you should split it into multiple files and submit them separately.

Note: When submitting files via the Playground in a language other than English, be sure to only select "Transcription" on the models page. That way the automatic language detection feature is used to route the request to the appropriate model. Other features such as Auto Chapters are currently only available for the English model.

You can use the optional language_code parameter to specify the language of the spoken audio in the files that you submit to the API. If you don't include a language_code parameter in your request it defaults to en_us. If you're unsure of the spoken language spoken in your audio file, you can use our Automatic Language Detection feature to automatically identify the dominant language in your file.

Check out this section of our documentation to learn more about using the language_code parameter.