IVR Flow Builder v2 is live — build visual call trees with no code.
Callio auto-calls your customers the moment an order, lead, or event triggers — handles their response with IVR, logs the result, and keeps your team free.
Incoming Call
Order Confirmation · Auto-call
+880-800-CALLIO
98% confirmed
Last 30 days
120ms
Avg call connect
99.8%
Platform uptime
2M+
Calls automated
35+
Countries served
Powering dynamic voice for enterprises worldwide
Design, schedule, dial, and analyse every corporate call from one workspace.
Configure rules to speak text, output audio streams, and collect DTMF keypresses instantly.
Feed CSV lead sheets into campaigns with dial spacing, machine detection, and follow-up logic.
Live agent boards, companion pairing, monitor active streams, and log call outcomes in real time.
Secure webhook tunnels, key controls, and rich generators for Curl, Node, Python in seconds.
Answer the incoming call, hear the automated voice message, then press a key to see the full IVR flow in action — just like your real customers will.
Your customer receives an automated call from Callio's voice engine.
AI-generated TTS reads the order info and presents menu options.
Press 1 to confirm delivery or 0 to transfer to a live agent.
Callio logs the response and routes the call or closes the ticket.
Incoming Call
Automated Voice • +880-CALLIO
Drag-and-drop node editor. Design, preview, and deploy full IVR flows without a single line of code.
Incoming Call
StartTrigger: Order Placed webhook
Play Welcome Message
"Hello! Press 1 for order status, 0 for support."
Order Status TTS
Your order #1234 is out for delivery
End Call
EndLog: status_confirmed
Transfer to Agent
Route: Support Queue → SIP ext. 201
Live Agent
EndWhisper: returning customer
Connect to custom websites, WordPress, or Shopify. Enable automated voice flows, checkout recoveries, and smart dialers in minutes.
All integrations leverage Callio's redundant carrier gateways for <120ms global initiation latency.
const callio = require('@callio/sdk')('cl_live_abc123');
await callio.calls.create({
to: "+8801712345678",
voice: "Rachel_Warm",
script: "Your order #1234 is confirmed."
});Test Custom Webhook Handshake
Simulate real-time handshakes to Callio voice tunnels.
Multi-carrier redundant routing keeps calls flowing.
Millions of critical voice requests every day.
Crystal-clear synthesis with zero audio lag.
Credentials, recordings, and logs fully encrypted.
"Callio revolutionized our automated transaction confirmation line. Ultra-low latency and strict financial-grade compliance let us scale to $15M in voice-confirmed volume."
VP of Infrastructure, ApexPay
"We automated 250,000 appointment reminders. The reliability is impeccable — 28% reduction in no-shows, and integrations were live in under an hour."
Head of Patient Experience, CareSync
Join thousands of businesses using Callio. Set up IVR flows in minutes — no coding required.