Natural Indian language TTS for Exotel, Knowlarity, Ozonetel & more. Replace robotic IVR prompts with studio-quality AI voices in 20+ languages.
Drop-in integration via webhook, WebSocket, or pre-generated audio
India's leading cloud telephony platform
SuperReceptionist — 15K+ businesses
Enterprise contact center solution
Multi-tiered IVR system
Choose the pattern that fits your architecture
Simplest — works with every provider
Your IVR provider calls your webhook. You return an audio URL. Works out of the box with Exotel, Knowlarity, Ozonetel, and MyOperator.
// Exotel greeting applet webhook
app.get('/api/ivr/greeting', (req, res) => {
const { CallSid, From } = req.query;
const audioUrl = await voislabs.tts({
text: 'नमस्ते, VoisLabs में आपका स्वागत है',
lang: 'hi-IN',
format: 'wav',
sampleRate: 8000,
});
res.type('text/plain').send(audioUrl);
});Real-time voice for AI bots
Bidirectional audio streaming for conversational AI. Send text, receive PCM frames in real-time. Under 200ms time-to-first-byte.
// Exotel Voicebot Applet — WebSocket
ws.on('message', async (data) => {
const stream = voislabs.stream({
text: agentResponse,
lang: 'ta-IN',
format: 'pcm16',
sampleRate: 8000,
});
for await (const chunk of stream) {
ws.send(base64Encode(chunk));
}
});Zero latency for static prompts
Pre-generate IVR menus, greetings, and common prompts. Cache on CDN for instant playback. Perfect for high-volume call centers.
// Pre-generate and cache on CDN
const prompts = [
'मुख्य मेनू के लिए 1 दबाएं',
'कृपया प्रतीक्षा करें...',
'धन्यवाद, आपका कॉल महत्वपूर्ण है',
];
for (const text of prompts) {
const audio = await voislabs.generate({
text, lang: 'hi-IN', format: 'wav',
});
await cdn.upload(audio, contentHash(text));
}Native-quality TTS that platform-built voices can't match
Hindi
हिन्दी
Tamil
தமிழ்
Telugu
తెలుగు
Kannada
ಕನ್ನಡ
Malayalam
മലയാളം
Bengali
বাংলা
Marathi
मराठी
English
English
From sign-up to your first IVR call
Sign up and generate your API key. Includes free credits to test.
Point your Exotel, Knowlarity, or Ozonetel greeting applet to your VoisLabs webhook.
Your callers hear natural, emotional voices in their own language. No more robotic prompts.
Every touchpoint in the caller journey, powered by AI
Natural-sounding welcome messages that set the tone for caller experience.
“नमस्ते, [कंपनी] में आपका स्वागत है।”
Clear, professional IVR menu prompts in any Indian language.
“बिक्री के लिए 1 दबाएं, सहायता के लिए 2 दबाएं।”
Dynamic account information readouts with natural prosody.
“आपका बैलेंस ₹12,450 है।”
Personalized order tracking updates over the phone.
“आपका ऑर्डर #4521 शिप हो गया है।”
Secure, clear one-time password announcements.
“आपका वन-टाइम पासवर्ड है: 7, 3, 8, 5।”
Hold music alternatives with estimated wait time updates.
“आपकी कॉल कतार में है। अनुमानित प्रतीक्षा: 2 मिनट।”
Pay per minute of generated speech. Same voices, same quality — optimized for telephony at 8kHz. Volume discounts for 10,000+ minutes per month.
Replace robotic IVR prompts with natural AI voices. Start with our included daily tier, scale to enterprise volumes.