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Ask which languages the voice system has actually been tested in

Format: Company perspective.

“Supports this language” is not the same as “tested with our callers.”

Ask for tests in each language your intake would use. Twilio's Gather guide says language support depends on the chosen speech model.[2] A language on that list does not prove your full intake works in it. Check the caller's words and the record staff receive.

Use these questions in the acceptance meeting:

  • Which language and regional form, or locale, did you test? Which speech model and script version did you use?
  • Did the set include the accents and place names our desk commonly hears?
  • What happened when a caller switched languages during an answer?
  • Could callers correct a name, unit number, or contact method?
  • What did the intake say when it could not continue reliably?
  • Which staff member can review the resulting request in that language?

Here is a hypothetical acceptance conversation for a proposed custom design.

Buyer: “You showed a clear Spanish greeting. Did you test a caller who switches to English for a street name?”

Builder: “Not in this test set.”

Buyer: “Then that condition stays unverified. Add it to the test plan, along with the fallback and staff handoff. Do not call the full language workflow accepted yet.”

Keep a test row for each language. List the conditions tested, failed cases, open limits, reviewer, and scope accepted. Do not bury one language's failures in a score for all calls. A translated prompt does not prove that the final staff note keeps the caller's meaning.

Core Agentic voice is a custom-build direction, not a verified multilingual calling service. Book a Demo to discuss the language evidence your own intake would need before rollout.

Sources

These sources describe the named provider or framework. They do not establish a Core Agentic integration, customer result or certification.