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AI phone agents in Cantonese

ThunderPhone supports Cantonese voice calls, a Cantonese dashboard interface, and Cantonese product documentation. Cantonese is one of the platform's 47 supported voice languages, with six compatible voices in the current catalog.

Cantonese voice availability and pricing

The current catalog includes six multilingual voices that support Cantonese. It does not currently list a separate Cantonese-specific premium-voice set.

Cantonese uses a premium language path at +2¢ per minute. That makes the engine-plus-language rate:

  • Spark: 2¢ + 2¢ = 4¢/minute
  • Bolt: 5¢ + 2¢ = 7¢/minute
  • Storm: 9¢ + 2¢ = 11¢/minute

These figures exclude telephony and any other optional configuration charges. The agent builder shows the current all-in rate as settings change.

All six voices should be tested with the intended callers. Evaluate names, addresses, numbers, English loanwords, business-specific terminology, and the amount of Cantonese-English switching the agent will encounter.

Cantonese in the dashboard and documentation

Cantonese is a shipped dashboard locale. A team can use the Cantonese interface to build agents and operate the product.

ThunderPhone also publishes a Cantonese documentation edition. It is served on the main site rather than the primary docs host, and it is machine-translated from the governing English docs, so a Cantonese language page should link to it directly and keep the English docs one click away for exact wording.

Cantonese and English in one call

An agent can start in Cantonese and switch automatically when a caller moves to a configured additional language such as English. It can also start in English and switch to Cantonese.

The chosen voice must support every selected language. Test realistic switching instead of assuming every code-mixed phrase will behave the same way, especially when callers alternate languages within names, addresses, or technical descriptions.

Sample Cantonese call experience

The following flow is written in English to describe the caller experience.

Agent starts in Cantonese: Greets the caller, identifies the business, and asks how it can help.

Caller answers in Cantonese: Explains that they need to confirm a service appointment.

Agent continues in Cantonese: Requests the caller's name and looks up the approved appointment record.

Caller switches to English: Gives an English street name and asks, “Is the appointment still at two?”

Agent switches to English: Confirms the time and repeats the address for accuracy.

Caller returns to Cantonese: Asks what to prepare before the visit.

Agent returns to Cantonese: Answers from the approved knowledge source and offers to repeat the details.

No separate number or manual language-menu choice is required.

Build and test a Cantonese agent

  1. Set Cantonese as primary, or add it to an agent's additional languages.
  2. Choose one of the six voices that supports the full selected language set.
  3. Confirm the displayed +2¢ per-minute language surcharge in the builder.
  4. Add reviewed Cantonese prompt instructions and source content where exact wording matters.
  5. Run Cantonese-only and mixed Cantonese-English simulations.
  6. Review pronunciation, transcription, actions, transfers, and fallback behavior before deployment.

Frequently asked questions

Does ThunderPhone support Cantonese voice calls?

Yes. Cantonese is one of ThunderPhone's 47 supported voice languages and currently has six compatible multilingual voices.

How much does Cantonese cost?

Cantonese adds 2¢ per minute to the selected engine rate. The engine-plus-language rate is therefore 4¢ on Spark, 7¢ on Bolt, or 11¢ on Storm, before telephony and other optional charges.

Are premium Cantonese voices available?

The current catalog does not list separate Cantonese-specific premium voices. It lists six multilingual Cantonese-compatible voices, all on the +2¢ premium language path.

Is the dashboard available in Cantonese?

Yes. Cantonese is a shipped dashboard locale.

Are the ThunderPhone docs available in Cantonese?

Yes. ThunderPhone publishes a Cantonese documentation edition covering the product guides, API reference, and supported-language information. English remains the governing text.

Can a Cantonese agent switch to English during a call?

Yes. Add English as an additional language and choose a voice that supports both. The agent can switch automatically when the caller changes language mid-call.