PHONE CALLING API

Build Voice Calling Into Any App

The most reliable phone calling API for Indian developers. Make calls, receive calls, and build powerful voice experiences with just a few lines of code. 80% cheaper than Twilio.

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Start with ₹500 free credits

Complete Telephony Stack for Developers

Outbound Calling

Make calls to any phone number programmatically. Support for click-to-call, automated campaigns, and notifications.

Inbound Calling

Receive calls on virtual phone numbers. Route intelligently based on time, location, or custom logic.

Call Recording

Record calls with one API parameter. Automatic cloud storage, transcription, and compliance features.

Indian Phone Numbers

Get local, mobile, and toll-free numbers across all Indian states. Port existing numbers easily.

IVR & Call Flows

Build complex IVR systems with our visual builder or API. Support for DTMF, voice input, and AI routing.

Real-time Analytics

Track call metrics, quality scores, and agent performance. Export data or stream to your analytics platform.

Simple APIs, Powerful Results

Make Outbound Calls

// Make an outbound call
const call = await callwhiz.calls.create({
  to: '+919876543210',
  from: '+918012345678',
  url: 'https://your-app.com/answer',
  record: true,
  statusCallback: 'https://your-app.com/status'
});

console.log('Call initiated:', call.sid);

Handle Incoming Calls

// Handle incoming calls
app.post('/incoming-call', (req, res) => {
  const response = new CallWhiz.VoiceResponse();
  
  response.say('Welcome to our support line', {
    voice: 'Polly.Aditi',
    language: 'hi-IN'
  });
  
  response.gather({
    numDigits: 1,
    action: '/handle-gather',
    method: 'POST'
  }).say('Press 1 for sales, 2 for support');
  
  res.type('text/xml');
  res.send(response.toString());
});

Browser-to-Phone Calling

// Browser-to-phone calling
const device = new CallWhiz.Device(token);

await device.register();

// Make a call from browser
const call = await device.connect({
  params: {
    To: '+919876543210',
    CallerId: '+918012345678'
  }
});

// Handle call events
call.on('ringing', () => console.log('Ringing...'));
call.on('connect', () => console.log('Connected'));
call.on('disconnect', () => console.log('Call ended'));

Best Pricing for Indian Developers

Pay only for what you use. No setup fees, no minimum commitments.

Feature	CallWhiz AI	Twilio	Exotel
Local Calls	₹0.30/min	₹1.50/min	₹0.90/min
Mobile Calls	₹0.40/min	₹1.75/min	₹1.00/min
Toll-Free	₹0.60/min	₹2.50/min	₹1.50/min
Phone Numbers	₹200/month	₹1000/month	₹500/month
Recording	Free	₹0.30/min	₹0.20/min

View detailed pricing →

Trusted by Developers Building

Call Centers & Contact Centers

Appointment Reminders

2FA & OTP Verification

Customer Support Lines

Sales Automation

Emergency Alert Systems

Survey & Polling Systems

Delivery Notifications

Telemedicine Platforms

Built for Developers, by Developers

5-Minute Setup

Get your first call working in under 5 minutes with our quickstart guide.

99.9% Uptime SLA

Enterprise-grade reliability with redundant infrastructure across India.

Amazing DX

Clean APIs, great docs, and SDKs for all major languages.

Start Building with Phone Calling API

Use CallWhiz AI to power voice experiences in your product

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No credit card required • ₹500 free credits