Your customers won't know
they're talking to an AI

Supercall's voice AI speaks naturally, understands context, handles interruptions, switches languages mid-sentence, and sounds like a native speaker from your customer's hometown.

🤖 AI Voice Active — English (American accent)
📞 CUSTOMER
Hi, yeah I'm calling to cancel my account. I've been getting charged but I haven't used the service in months.
🤖 SUPERCALL AI
I totally understand, and I'm sorry to hear that. Let me pull up your account. I can see you're on the Growth plan. Before I cancel, would you be open to a pause — or I can offer 3 months at 50% off?
📞 CUSTOMER
Hmm, the discount actually sounds interesting. ¿Puedes explicarlo en español? My English isn't the best.
🤖 SUPERCALL AI
¡Claro que sí! Con el descuento, su plan costaría solo $14.50 al mes por tres meses en lugar de $29. I've applied it to your account — the discount starts today. ¿Hay algo más en lo que pueda ayudarte?

40+ accents — not just languages

True localization means more than translation. It's the rhythm, intonation, and warmth of a native speaker from your customer's region.

🇨🇳

Mandarin

Standard · Cantonese

▶ Listen to sample
🇮🇳

Hindi

Standard · Punjabi · Tamil

▶ Listen to sample
🇬🇧

English (UK)

RP · London · Scottish

▶ Listen to sample
🇩🇪

German

Standard · Austrian · Swiss

▶ Listen to sample
🇯🇵

Japanese

Standard · Kansai

▶ Listen to sample
🇰🇷

Korean

Seoul standard

▶ Listen to sample
🇵🇹

Portuguese

Brazilian · European

▶ Listen to sample
🇫🇷

French

Metropolitan · Canadian

▶ Listen to sample
🇸🇦

Arabic

Gulf · Egyptian · Levantine

▶ Listen to sample

Under the hood of Supercall Voice AI

👂

Streaming speech recognition

Audio is transcribed in real-time as the caller speaks — no waiting for them to finish. Handles overlapping speech, background noise, and code-switching between languages seamlessly.

🧠

Context-aware LLM reasoning

Our fine-tuned language model understands your business domain, references your knowledge base, queries your CRM mid-conversation, and generates contextually perfect responses every time.

🗣️

Neural voice synthesis

State-of-the-art TTS with emotion control, natural prosody, and regional accent tuning. The voice matches the emotional context — warm and reassuring for complaints, upbeat for confirmations.

🔁

Interrupt & turn-taking engine

Real conversations aren't turn-by-turn. Our barge-in detection allows callers to interrupt naturally, ask mid-answer clarifications, and redirect the conversation — just like talking to a human.

Voice processing pipeline

1
Audio capture

WhatsApp voice stream

0ms
2
Speech-to-text

Real-time transcription

80ms
3
AI reasoning

Intent + knowledge base

120ms
4
Text-to-speech

Neural voice synthesis

80ms
5
Audio delivery

Voice response to caller

<300ms total

AI that reads the room

Real-time sentiment detection adjusts the AI's tone, pace, and behavior based on how the caller is feeling.

😤

Frustrated caller

AI slows down, uses empathetic language, offers immediate solutions, and proactively offers human escalation.

😊

Happy caller

AI matches upbeat energy, suggests upsells naturally, and closes with a warm personalized farewell.

😕

Confused caller

AI detects confusion, rephrases explanations simply, breaks steps into smaller pieces, and confirms understanding.

⏱️

Rushed caller

AI picks up on urgency cues, gives concise answers, skips pleasantries, and gets straight to the resolution.

👴

Elderly caller

AI speaks slower, uses clearer diction, repeats key information, and patiently guides through each step.

🌍

Non-native speaker

AI simplifies vocabulary, avoids idioms, speaks at moderate pace, and confirms understanding at each step.

AI with boundaries

Our voicebot operates within strict guardrails to protect your brand and your customers.

🛡️

Hallucination prevention

AI only answers from your approved knowledge base. If it doesn't know, it says so — and offers to connect the caller with a human instead of making things up.

🚫

Topic guardrails

Define off-limits topics. AI will gracefully decline to discuss competitors, politics, or any sensitive subjects you specify.

🔒

PII protection

Automatic detection and redaction of credit card numbers, SSNs, and other sensitive data from transcripts and recordings.

📜

Compliance scripts

Inject required legal disclaimers, consent language, and compliance statements at the right moment in every call.

Hear the AI voice for yourself

Try a free demo call. Pick a language, describe your business, and talk to the AI live.