⚡ Sub-800ms Enterprise Conversational Voice OS

Real-Time Voice AI for Mission-Critical Operations.

Deploy human-grade, streaming conversational voice agents in minutes. Grounded with your enterprise data, connected directly to cellular carriers, and metered for maximum profitability.

Try Live Voice Agent Read Developer API Guide

< 800ms

P90 E2E Voice Latency

100%

Barge-in Interruption

Cellular + SIP

Africa's Talking Telephony

SQLite WAL

High-Concurrency Ledger

Live Real-Time Streaming Playground

Disconnected

Click "Start Session" and grant microphone access to begin speaking

You Said (Speech-to-Text)

Awaiting speech input... Say something like "What are your support hours?"

Voice Agent Response

Agent streaming audio output will appear here in real-time...

Audio In: Microphone: inactive

Audio Out: Playback buffer: 0 ms queued, 0 ms scheduled, 0 underruns

Raw WebSocket Event Stream Auto-Scroll Enabled

Enterprise Engine

Engineered for Sub-800ms Fluidity

Every layer of the Coetara Voice OS has been designed to eliminate latency, prevent audio jitter, and ensure factual accuracy.

⚡

Full-Duplex Audio Pipeline

Continuous bidirectional audio streaming via WebSockets. Immediate acoustic barge-in cancels downstream TTS synthesis the instant a human speaks.

🧠

Grounded Knowledge Base

Attach dynamic knowledge items via SQLite. The agent answers inquiries with zero hallucinations, citing your specific business policies and hours.

📞

Telephony & Cellular Calling

Native integration with Africa's Talking and standard SIP gateways. Initiate autonomous outbound calls or answer inbound toll lines effortlessly.

📈

Dynamic Margin & Metering

Built-in retail billing engine. Calculate exact cost per millisecond across STT, LLM tokens, TTS audio, and telephony minutes with configurable markups.

🛡️

Tenant Key Isolation

Issue scoped API keys (va_live_...) for developers and clients. Enforce rate limits, per-minute budgets, and instant revocation.

🗄️

Production SQLite WAL

Zero lock contention on concurrent writes. High-throughput Write-Ahead Logging preserves every request ledger and financial record reliably.

Execution Pipeline

How Real-Time Voice Intelligence Flows

From the user's vocal cord to carrier audio response in less than a second.

Audio Ingestion

16kHz linear PCM stream captured via Web Audio Worklet or cellular phone channel.

Streaming STT

Deepgram Nova-2 / Flux transcribes speech with microsecond interim turn tokens.

Grounded Reasoning

Groq Llama-3-70B injects database knowledge to generate factual, instant conversational responses.

Neural Voice TTS

High-fidelity MiniMax neural synthesis generates 24kHz conversational audio buffers.

Developer Integration

Integrate Voice with 3 Lines of Code

Connect web apps, mobile devices, and telephony backends with standard REST or WebSocket protocols.

# Send text and receive instant intelligent conversational response + 24kHz audio
curl -X POST https://voiceagent.coetara.com/api/v1/chat \
  -H "X-API-Key: va_live_demo_prod_key" \
  -H "Content-Type: application/json" \
  -d '{
    "message": "Hello, can you explain your pricing and support hours?",
    "voice": "female-shaonv"
  }'
        

# Trigger an autonomous outbound phone call to any cellular number
import httpx

resp = httpx.post(
    "https://voiceagent.coetara.com/v1/telephony/outbound-call",
    headers={"X-API-Key": "va_live_demo_prod_key"},
    json={
        "to_phone_number": "+2348012345678",
        "developer_id": "enterprise-client-1",
        "custom_prompt": "Confirm the customer's reservation for tomorrow at 7 PM."
    }
)
print(resp.json())
        

// Connect to real-time streaming WebSocket
const socket = new WebSocket('wss://voiceagent.coetara.com/ws?api_key=va_live_demo_prod_key');

socket.onopen = () => console.log('Voice session ready');
socket.onmessage = ({ data }) => {
  if (typeof data === 'string') {
    const event = JSON.parse(data);
    if (event.event === 'transcript_final') console.log('User:', event.text);
    if (event.event === 'llm_token') process.stdout.write(event.text);
  } else {
    // Raw 24kHz binary PCM audio playback
    playAudioBuffer(data);
  }
};
        

Predictable Economics

Transparent SaaS Pricing

Scale from initial developer prototyping to high-concurrency enterprise carrier deployments.

Developer Sandbox

Ideal for testing models, exploring endpoints, and prototyping.

$0 / month

50 Live Voice Minutes included
REST & WebSocket API access
5 Grounded Knowledge Items
Community Developer Discord

Start Prototyping

Platform Administrator or SaaS Operator?

Access the operator console to inspect developer API keys, track real-time profit margins, update unit pricing markups, and manage carrier phone lines.

Open Admin Console