Sonex Labs

Voice agents · Bilingual receptionist

A bilingual AI receptionist for English and Spanish callers

Callers start in English or Spanish, or switch halfway through, and the receptionist follows in the same voice. It answers questions, books appointments and transfers calls, at any hour, for $0.055 per minute.

$0.055

per minute, English or Spanish

1

voice for both languages

~300 ms

from the caller stopping to the receptionist speaking

Hear it

One voice, switching from English to Spanish.

This is the receptionist's side of a call where the caller asks to continue in Spanish. Press play: the audio is generated live by Pāṇini TTS, not a recording.

168 chars · about 12 s168/220
English and Spanish

Voices

    Sofia and Mateo are Latin American Spanish voices and Liz is American English; each keeps its accent in both languages. Change the text and try each one. More Spanish samples are on the Spanish text to speech page.

    How the switch works

    What happens when a caller changes language.

    Each part of the agent handles the switch, so the caller never has to ask for a different line.

    1. 01

      The caller speaks Spanish

      Valmiki STT detects the spoken language automatically and transcribes it, even when the caller switches mid-sentence.
    2. 02

      The agent answers in kind

      The agent's instructions in Sonex Flows tell it to reply in the caller's language. It keeps the details already given, such as name and reason for calling.
    3. 03

      The same voice replies

      One voice can speak across languages, and a cloned voice carries across languages too. The receptionist sounds like the same person in both languages.

    Test with your own callers before you switch your line over. Names, street addresses and dates said in Spanish are where mistakes show up first, so check those in the call transcripts during the first week.

    What it handles

    Front-desk work, in both languages.

    Appointments

    Agents support MCP and tool calling during a call. Connect your booking calendar and the receptionist books, moves and cancels slots.

    Questions

    Hours, location, services and prices you publish, answered from the instructions you write.

    Messages

    Name, number and reason for calling, in either language. Every call has a recording and a transcript.

    Transfers

    The agent can transfer the call live to a person on your team. Send Spanish speakers to a Spanish-speaking colleague when one is in.

    After hours

    Nights, weekends and overflow when every line is busy, so callers are not sent to voicemail.

    Your tools

    It connects to HubSpot, Salesforce, n8n, Zapier and Make.

    Price

    $0.055 per minute, in either language.

    The price is the same whether the caller speaks English, Spanish or switches between them.

    Practice sizeCalls a monthMinutesMonthly cost
    Solo office100 calls of 3 minutes300$16.50
    Small practice200 calls of 3 minutes600$33.00
    Busy front desk1,000 calls of 3 minutes3,000$165.00

    $0.055 per minute is the published price for agent calls. Telephony you connect from your own provider carries no Sonex minute charge. See pricing.

    Disclosure

    Say it is an AI, in both languages.

    Open every call with a short line saying the caller is speaking with an AI and, if you record, that the call is recorded. The AI disclosure and recording-notice scripts have wording for English and Spanish callers, and AI calling rules by country covers disclosure and recording consent country by country.

    Running a medical or legal office? The AI answering service page covers medical, legal and after-hours setups.

    FAQ

    Bilingual receptionist, answered.

    A bilingual answering service answers your business calls in two languages, most often English and Spanish in the US. An AI bilingual receptionist does the same job with a voice agent: it greets callers, answers questions, books appointments and takes messages in whichever language the caller uses.

    Yes. Valmiki STT detects the spoken language automatically. The agent replies in the language the caller is using, and Pāṇini TTS speaks both languages in the same voice, so the receptionist does not change mid-call.

    The Spanish voices in the catalog are Latin American, and a voice keeps its accent in every language it speaks. Preview them above with your own greeting. For a particular accent, or your own receptionist's voice, clone it with consent from a 10-second sample.

    $0.055 per minute of call, in English or Spanish, at the published price. A small practice taking 600 minutes of calls a month pays $33.00.

    Yes. The agent can transfer the call live to a person on your team. You can send Spanish-speaking callers to a Spanish-speaking member of staff.

    Yes. The same setup works for any pair, such as English and Hindi, Arabic or Vietnamese. The voice keeps its own accent in each language; for a local accent, clone a voice from a 10-second sample of a native speaker.

    No. Connect the telephony account that holds the number you already use, and calls on it go to the receptionist.

    Answer every caller in their language.

    Write the greeting in English and Spanish, pick a voice, and call it yourself in both languages before your patients or clients do.