Response Languages

The response_language field in Vectara allows control of the language for sumarization requests. You can ask Vectara to attempt to guess the language of the query and respond in that guessed language by setting response_language to auto. However, this guessing is not perfect: many languages have many borrowed words and phrases which makes guessing the language difficult to impossible at times. For that reason, it's recommended that you send the user's preferred language when you know it.

One possible way to do this is just to ask the user to configure their preferred language or to use the localization of your application to determine the best language to send to Vectara. Alternatively, if your application is a web-based application, you can consider using the Navigator.language and Navigator.languages API.

For the most up-to-date list of languages supported by Vectara's models, see https://github.com/vectara/protos/blob/main/common.proto#L10.

Both ISO 639-1 and ISO 639-3 language codes are supported in this API.

Some features, such as factual_consistency_score, may not work on all languages. The Factual Consistency Score is supported in English, German, and French (eng,deu,fra).