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AI phone agents in Slovak

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

An agent can answer in Slovak, follow its configured instructions and knowledge, and switch automatically when a caller moves to another configured language such as English—all within the same call.

Slovak voice availability and pricing

The current catalog includes eight voices that support Slovak:

  • six multilingual voices; and
  • two premium Slovak voices, Katarina and Peter.

Slovak uses a premium language path at +3¢ per minute, applied to all eight voices. The engine-plus-language rate is:

  • Spark: 2¢ + 3¢ = 5¢/minute
  • Bolt: 5¢ + 3¢ = 8¢/minute
  • Storm: 9¢ + 3¢ = 12¢/minute

These illustrative figures exclude telephony and any other optional configuration charges. Pricing is pay as you go, with no subscription; the agent builder shows the current all-in rate as settings change. The premium Slovak voices sit on the same +3¢ language path as the multilingual voices, so choosing Katarina or Peter does not change the language surcharge.

Evaluate voices against the calls you expect to receive. Test Slovak names with diacritics, street addresses, numbers, English loanwords, business-specific terminology, and the amount of Slovak-English switching your callers actually use.

Slovak in the dashboard and documentation

Slovak is a shipped dashboard locale, not just a call setting. A team can work in the Slovak interface while configuring prompts, reviewing calls, and managing the organization.

ThunderPhone also publishes a Slovak documentation edition served on the main site. It is machine-translated from the governing English docs, so keep the English docs one click away for exact wording.

Slovak and English in one call

An agent has one primary language and can have additional languages. If Slovak is primary and English is additional—or the reverse—the agent switches automatically when the caller changes language.

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

Sample Slovak call experience

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

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

Caller answers in Slovak: Says they want to reschedule tomorrow's service visit.

Agent continues in Slovak: Confirms the caller's name, looks up the approved scheduling action, and offers two available times.

Caller switches to English: "Actually, can we do Friday morning instead?"

Agent switches to English: Offers the available Friday-morning slot and asks for confirmation.

Caller returns to Slovak: Confirms the new time.

Agent returns to Slovak: Repeats the final date and time, then ends the call according to the business's instructions.

The switch happens within the same call; the caller does not need to hang up, choose a phone-tree option, or reach a separate number.

Build and test a Slovak agent

  1. Set Slovak as the primary language, or add it as an additional language.
  2. Choose one of the eight voices that supports the complete language set.
  3. Confirm the displayed +3¢ per-minute language surcharge in the builder.
  4. Add reviewed Slovak prompt instructions and source content where exact wording matters.
  5. Run Slovak-only and mixed Slovak-English simulations in the browser tester.
  6. Review transcripts, pronunciation, tool actions, transfers, and fallback behavior before deployment.

Frequently asked questions

Does ThunderPhone support Slovak voice calls?

Yes. Slovak is one of ThunderPhone's 47 supported voice languages and currently has eight compatible voices in the catalog.

How much does Slovak cost?

Slovak adds 3¢ per minute to the selected engine rate. The engine-plus-language rate is therefore 5¢ on Spark, 8¢ on Bolt, or 12¢ on Storm, before telephony and other optional charges.

Are premium Slovak voices available?

Yes. The catalog lists two premium Slovak voices, Katarina and Peter, alongside six multilingual voices. All eight are on the same +3¢ per-minute language path, so selecting a premium voice does not add a further language charge.

Is the ThunderPhone dashboard available in Slovak?

Yes. Slovak is a shipped dashboard locale, so builders can use the product interface in Slovak.

Are ThunderPhone docs available in Slovak?

Yes. ThunderPhone publishes a Slovak documentation edition served on the main site. It is machine-translated from the governing English docs, so the English docs remain the exact reference.

Can a Slovak agent switch to English during a call?

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