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Experts

Languages

Tell an expert which languages its callers speak, so it hears them correctly and answers in kind.

An expert can talk in more than one language. The Languages setting tells Rydhm which ones your callers really speak. It does two things at once:

  1. It tells the transcriber which languages to expect, so it hears them accurately.
  2. It tells the model that it may answer in those languages, so it replies in the caller’s language.

Choose the languages

1

Open the Voice tab

Open the expert, then Voice. Languages is under Voice and model.

2

Tick the languages

Choose any of these ten:

EnglishHindiSpanishPortugueseFrench
GermanItalianDutchRussianJapanese

An expert always has at least one language. One that was never set behaves as English.

3

Check the transcriber

Rydhm moves the Speech-to-text choice with your languages, so the two can’t disagree:

  • Two or more languages switch Deepgram Flux — English to Deepgram Flux — multilingual (code-switching), and Deepgram Nova-3 — English to Deepgram Nova-3 — multilingual.
  • Going back to one language switches back to the English model, which takes turns faster.
4

Save and test

Choose Save changes, then talk to the expert in each language from the Test panel.

Pick only what is really spoken. A language you add is a hint, not a filter: each extra language costs a little accuracy on the others.

Languages outside the list

The ten languages above are the ones Rydhm’s multilingual transcriber hears in both calls and meetings, so a language you tick works everywhere the expert goes. For other languages, choose Gemini 3.5 Transcribe Live — any language, auto-detected as the expert’s Speech-to-text. It detects the language of each thing a caller says, and is the only option that hears Malayalam, Gujarati, Bengali, Tamil, Telugu, Kannada or Marathi. Its turn-taking rhythm is a little different from Flux’s.

How each engine handles languages

EngineWhat happens
PipelineThe transcriber hears the languages you chose. The model answers in the caller’s language, and the voice reads each reply in the language it is written in.
Gemini LiveThe model switches language by itself once you’ve allowed it. Its voices speak whatever language the conversation is in.
GPT-LiveThe model hears and answers on its own. A few of its voices are made for one language (Hindi, German, French, Japanese, Korean); pick one of those for an expert that mostly speaks that language.

See Voice engines.

Pick a voice that speaks the language

Every voice in the library has a first language and may speak others. On the Voices page, pick a language and turn on Native speakers to see only voices whose first language it is. When an expert speaks one language other than English, Change voice opens already filtered to it. The sample on the expert’s voice card plays in the expert’s first language when the voice speaks it, and Hear the first message reads the greeting in the language it is written in.

Tone is exact only on Cartesia voices in English. In other languages it is ignored or followed loosely. See Voices.

What visitors see

On a share link and the website widget, an expert with two or more languages shows a language picker. The visitor’s choice is the language the expert opens in, and the expert follows if they switch later. The choice is remembered for that link in the visitor’s browser.

On the widget you can set the starting language yourself with the language attribute, a two-letter code the expert speaks:

<rydhm-expert expert="<link>" language="hi"></rydhm-expert>

The visitor can still change it.

Gotchas

  • Write the first message in the language most callers expect. It is spoken as written.
  • Templates and Describe it set languages for you. Check them after creating an expert.
  • The knowledge search matches English words best. Knowledge in other languages is still found by meaning. See Search and sources.