Conversational AI
One agent across voice and every written channel, on a proprietary voice pipeline built for real world conversations where accents, background noise, fillers, interruptions, and domain-specific terminology are all handled at telephony latency in 30+ languages.
Book a demoOne agent, every channel
The same logic and knowledge run across voice, SMS, email, WhatsApp, web chat, Teams and Slack. Conversations carry across channels and sessions, and escalate to a person with the full history attached when they need to.
Booked an engineer visit for Thursday, 10:00 to 12:00.
Your visit is confirmed for Thursday, 10:00 to 12:00. Reply to change it.
Can they come earlier?
Thursday 08:00 to 10:00 is free. Shall I move it?
Agent definition
Write persona, tone and boundaries into the prompt, like what the agent always says, never says, and how it handles sensitive topics, plus step-by-step procedures for situations that need them, like verifying identity before account access.
Event Name *
Agent *
Languages *
Voices *
Initial message
Prompt
- 1You are Ana, a calm support agent for Corvane Energy heating customers.
- 2Always confirm the address before booking a visit.
- 3Never quote a repair price on the call.
- 4Hand billing disputes to a person.
Conversation rhythm
Dedicated models handle the back-and-forth of a real call. End-of-turn detection knows when a caller has finished speaking, interruption and filler models tell an "um" apart from a real attempt to speak, and voice activity detection isolates speech from music and noise, so the agent never cuts in early or speaks too late.
- 01End of turnAgent replied in 240 ms00:04.2
- 02“Mm-hm” ignoredBackchannel, agent kept speaking00:07.8
- 03InterruptionAgent stopped in 180 ms00:11.3
Transcription accuracy
Parallel transcription providers run with instant failover, tuned for the digits that break a lookup, like order numbers, tracking IDs, account references, and more, primed with your own vocabulary, so carrier names and product codes come through right.
Can I take your account number and the model on the unit?
It’s 40917263Account number, and it’s a Model X200Model.
Thanks. Your X200 is under warranty. Is it still showing F28?
How the agent sounds
In-house text-to-speech tuned for telephony delivery, so numbers, dates and abbreviations are pronounced consistently. Voice characteristics hold through a provider switch mid-call, and all 30+ languages keep the same voice quality and latency.
Your engineer visit is Thursday, 10:00 to 12:00.
¿Puede hablar en español?
Claro. La visita del técnico es el jueves, de 10:00 a 12:00.
FAQs
HappyRobot's voice pipeline is a 10-model system purpose-built for the realities of live telephony: accents, background noise, mobile callers, industry jargon, and interruptions, with proprietary components built and fine-tuned in-house where off-the-shelf providers fall short.
The pipeline combines proprietary text-to-speech, state-of-the-art speech recognition, SIP integration for telephony, and multi-language support, engineered specifically for the latency constraints of real phone calls rather than demo conditions.
Yes. Voice agents support live language switching mid-conversation with no workflow restart and no call transfer required.
A proprietary filler-detection and interruption-handling model distinguishes non-substantive sounds like "mhm" or "yeah" from a genuine attempt to take the floor. When a real interruption is detected, the agent stops speaking and processes the new input, which makes HappyRobot a true voice agent compared to other solutions.
HappyRobot's TTS v3 provides native support for a wide set of languages and regional accents including English (US, UK, Canada), Spanish (Spain, Mexico, and seven Latin American variants), Portuguese (Brazil, Portugal), Arabic (Modern Standard and Egyptian), Chinese (Mandarin and Taiwan), Catalan, French, German, Hindi, Italian, Japanese, Swedish, and more, with additional languages and accents continuing to roll out. Voices can also speak languages they weren't natively cloned in through multilingual voice cloning, and automatic provider failover with voice matching preserved keeps call quality consistent if an underlying provider has issues.
