DEVELOPER PLATFORM

Build Voice AI Apps

Powerful APIs to add voice agents and phone calling to your applications. Better developer experience than Vapi. Start building in minutes.

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Start with ₹500 free credits

Choose Your API

Voice Agents API

Build AI-powered voice agents that can handle complex conversations

  • Natural conversations
  • 100+ languages
  • Custom voices
  • Function calling
Explore API

Phone Calling API

Add phone calling capabilities to any application

  • Make & receive calls
  • WebRTC support
  • Call recording
  • Real-time events
Explore API

Quick Start

Install SDK

npm install @callwhiz/sdk

Initialize Client

import CallWhiz from '@callwhiz/sdk';

const callwhiz = new CallWhiz({
  apiKey: 'YOUR_API_KEY'
});

Make Your First Call

const call = await callwhiz.calls.create({
  to: '+919876543210',
  from: '+918012345678',
  message: 'Hello from CallWhiz AI!'
});

Built for Developers

5-Minute Setup

Get your first call working in under 5 minutes

Clean APIs

RESTful APIs with predictable responses

SDKs Available

Official SDKs for Python, Node.js, Go, Java

99.95% Uptime

Enterprise-grade reliability you can trust

Global Scale

Low latency infrastructure across India

24/7 Support

Developer support via chat, email, and phone

5000+
Active Developers
10M+
API Calls/Day
99.95%
Uptime SLA
< 100ms
API Latency

Developer Resources

API Documentation

Complete API reference with examples

Read docs →

SDK Playground

Test APIs in your browser

Try now →

Sample Projects

Ready-to-deploy examples

View on GitHub →

Start Building Today

Join thousands of developers building the future of voice

Get Started Free

No credit card required • ₹500 free credits