AI Voice Agent
Inbound and outbound AI call agents that talk naturally in 22 Indian languages, look up your CRM in real time, and take routine calls end-to-end without a human agent. Replace your IVR, or your entire call center, in a week.
Real-time demo on our production stack. No signup required.
Try saying
120s per call
Not recorded · No account required
How it works
Whether you're replacing a 20-seat call center or just your IVR greeting, setup follows the same path.
Bring your existing number via Twilio/Exotel, or rent a new DID from any region. Inbound and outbound work the same day.
Write a system prompt. Define tone, business hours, escalation rules. No dialogflow trees, no DTMF menus.
Hook in your CRM, knowledge base, payment gateway, or appointment system via tools and webhooks. The agent reads and writes.
Forward inbound to the AI agent, or kick off outbound call campaigns from the dashboard. Live transcripts stream in real time.
Features
The hard parts of voice AI (latency, barge-in, language handoff, tool calls) all handled.
Choose direct speech-to-speech models that listen, reason, and speak in one model (the lowest-latency, most human-feeling option), or a cascaded transcribe → LLM → speak pipeline when you want to mix any text model with a specific voice. Your call, per bot.
Customers can interrupt the agent mid-sentence, change topics, or correct themselves. The AI listens, pauses, and adapts, just like a human would.
Hindi, Tamil, Telugu, Bengali, Marathi, Kannada, Punjabi, Gujarati and more. Customers can start in Hindi, switch to English mid-call, and the agent keeps up.
Agent checks order status in Shopify, pulls appointment availability from Calendly, processes a Razorpay refund, all inside the live call.
Direct voice-to-voice models deliver near-instant turn-taking; the cascaded pipeline streams STT + LLM + TTS together. Customers feel they're talking to a fast, crisp voice, not dialing into 2005-era IVR.
Configure a primary model plus fallback tiers and an always-on safety-net pipeline. If a model is briefly unavailable, the call rolls over to the next tier automatically instead of failing.
Encrypted call recordings, PII redaction in transcripts, configurable retention, and a BAA for healthcare. DPDP Act-aligned throughout.
When the AI hits an escalation trigger, it warm-transfers to your team with full call context, transcript, and customer record attached.
Use Cases
Inbound, outbound, and everything in between.
Inbound support
Customers dial in and say 'I need to check my order status'. The AI agent authenticates, pulls the order from your CRM, reads back the shipping update, and handles the follow-up question, all in the customer's language, in under 90 seconds.
Result
6-minute IVR flow typically compressed to 90 seconds.
Outbound sales
Upload a lead list. The AI agent dials, qualifies by BANT, books calendar slots, and drops detailed notes into your CRM. Your human SDRs only show up to qualified meetings, not cold outreach.
Result
Typically 10x dial volume at 1/4 the cost per qualified meeting.
Appointment scheduling
Patients, students, or clients call to book, reschedule, or cancel. The agent checks real availability, books the slot, sends SMS/WhatsApp confirmations, and handles reschedules when life happens.
Result
Typically 30% more bookings captured outside business hours.
Collections & reminders
The AI agent calls customers with overdue invoices, in their language, explains the situation, takes partial payments, and offers payment plans. Compliant with RBI guidelines and trained on empathetic conversation patterns.
Result
Typically 40% higher recovery rate vs DTMF IVR systems.
E-commerce order verification
Before dispatching high-value orders, the agent calls the customer to confirm delivery address, time slot, and COD intent. Fraudulent orders caught before they ship, and you save reverse-logistics cost.
Result
Typically 55% lower RTO (return-to-origin) rate.
Healthcare intake
Before a hospital visit, the AI agent calls patients to collect symptoms, medication lists, and insurance details. Post-visit, it follows up on recovery, medication adherence, and prescription refills.
Result
Typically 50% less front-desk time per patient.
Compare
Why legacy IVR is costing you customers, and what the modern alternative looks like.
| Feature | CallMissed | Traditional IVR | Exotel AI | Ozonetel | Knowlarity |
|---|---|---|---|---|---|
| Natural-language understanding (no menus) | |||||
| 22 Indian languages | |||||
| Sub-500ms latency | |||||
| LLM tool calling (CRM, calendar, payments) | |||||
| Hinglish + code-switching | |||||
| Works with existing numbers (Twilio/Exotel) | |||||
| Transparent per-minute pricing | |||||
| Developer API | |||||
| Starting cost | ₹3/min | ₹0.50/min | ₹8/min | ₹12/min | Custom |
Comparison based on publicly listed features as of 2026. Check each vendor's site for the latest.
Developer API
The CallMissed Voice API spins up a fully-configured voice agent in one POST. Use it standalone, or embed into your own product.
curl -X POST https://api.callmissed.com/v1/voice/agents \
-H "Authorization: Bearer cm_your_key" \
-H "Content-Type: application/json" \
-d '{
"name": "Acme inbound support",
"llm_model": "sarvam-105b-conversations",
"stt_language": "hi-IN",
"tts_voice": "kavya",
"system_prompt": "You are a support agent for Acme Electronics. Answer in the customer'\''s language. Use the order_lookup tool for order questions. Escalate if the customer is angry.",
"tools": [
{"name": "order_lookup", "endpoint": "https://api.acme.com/orders/lookup"},
{"name": "escalate_to_human", "endpoint": "https://api.acme.com/support/escalate"}
],
"telephony": {"provider": "twilio", "phone_number": "+91-80-4567-8900"}
}'Create an inbound AI voice agent tied to your Twilio number.
FAQ
An AI voice agent is software that answers or makes phone calls, understands what a human caller is saying in natural language, and replies with a natural-sounding voice, in real time. Unlike traditional IVR ('press 1 for sales'), an AI voice agent uses speech-to-text, a large language model (LLM), and text-to-speech in a streaming pipeline so conversations feel like talking to a person. CallMissed's AI voice agent runs in 22 Indian languages and supports code-switching (e.g. mixing Hindi and English in one call).
Two ways, per bot. Direct voice-to-voice models do speech recognition, reasoning, and speech output in a single model for the lowest latency and the most natural turn-taking. Alternatively, a cascaded pipeline runs three streaming layers: (1) Speech-to-Text converts the caller's voice to text, (2) a Large Language Model decides what to say next from your system prompt, knowledge base, and tool calls, (3) Text-to-Speech synthesizes the reply. This lets you pair any text model with a specific voice. Both deliver sub-500ms time-to-first-audio and support barge-in, and you can set fallback tiers so a call never drops.
Yes. The same voice agent can answer and place calls over WhatsApp Business Calling, no phone line or SIP trunk needed, sharing the bot's knowledge base, tools, and escalation rules with your phone-network calls. See our WhatsApp Business Calling page for details.
Yes, completely. CallMissed plugs into your existing telephony (Twilio, Exotel, Plivo, Ozonetel, or any SIP trunk) and answers inbound calls in place of your current IVR flow. No menu trees, no 'press 1': the caller simply speaks their request. For outbound campaigns (reminders, sales, collections), the agent dials from your existing DIDs. You can keep your current numbers; nothing to port.
All 22 scheduled Indian languages: Hindi, English (Indian + US accents), Tamil, Telugu, Bengali, Marathi, Kannada, Malayalam, Gujarati, Punjabi, Odia, Assamese, Urdu, Kashmiri, Sanskrit, Konkani, Sindhi, Maithili, Manipuri, Bodo, Santali, Dogri, and Nepali. Callers can switch language mid-conversation; the agent adapts. For international deployments, we also support all major European, East Asian, and Latin American languages.
CallMissed AI voice pricing starts at ₹3 per active talk-minute (all inclusive: STT + LLM + TTS). No monthly minimums, no per-seat fees. Compare to a human agent at ₹50–80 per call-minute and it's typically 10–20x cheaper. Outbound campaigns add standard telephony fees (₹0.50–1.20 per minute depending on operator). Free tier includes 1000 API credits, roughly 300 test minutes.
Yes. Our voice pipeline supports real-time barge-in: if the caller interrupts the agent mid-sentence, the TTS stops immediately and the agent listens. The LLM receives the new input and adjusts its response. This is how you get a conversation that feels natural instead of the awkward pauses that plague old IVR systems.
Our median time-to-first-audio is ~500ms from the moment the caller stops speaking. That's faster than most humans reacting to a question. The pipeline streams: STT yields partial transcripts, the LLM starts generating before the caller finishes, and TTS starts speaking before the LLM finishes, all overlapping. End-to-end latency is under 1 second on voice, comparable to a normal phone call.
CallMissed has pre-built integrations with Salesforce, HubSpot, Zoho CRM, LeadSquared, Pipedrive, and Freshworks. You can also use webhooks or the OpenAI-compatible tool-use API to call any system; the agent will lookup an order, create a ticket, trigger a payment, or update a lead score during the live call. Every call is automatically logged to the CRM with transcript, summary, sentiment, and extracted fields.
Yes. Calls can be recorded (with start-of-call disclosure in the appropriate language), encrypted at rest, and retained per your policy. PII in transcripts is automatically redacted (credit cards, Aadhaar, phone numbers). CallMissed runs DPDP Act-aligned infrastructure with India data residency and signs BAAs for healthcare. For BFSI, we support DPDP Act (India) consent logging.
Yes. The CallMissed Voice API is fully programmable: spin up an agent with a single POST request. Configure the LLM, STT, TTS, voice, language, system prompt, and tool schema. Stream audio straight to one WebSocket (no SDK, and Deepgram-Voice-Agent-compatible if you already have that integration), or join over WebRTC or a SIP trunk. Full docs and SDKs (Python, Node, Go) are at docs.callmissed.com. You pick the speech-to-text, language and text-to-speech models yourself, from a catalogue that publishes each one's measured latency.
Book a 15-min demo and we'll place a live call to your phone, in your language of choice.