Build real-time voice, video & SMS
applications with one unified API.
Build and scale real-time communications with a single CPaaS API. Add programmable voice calls, HD video conferencing, audio rooms, SMS messaging, and OTP verification — backed by usage-based billing, real-time analytics, telemetry, and a unified developer platform.
<0ms
E2E Stream Latency
0 APIs
Voice · Video · SMS · OTP
0.0%
Guaranteed Uptime
₹0.00
Per SMS Segment
₹0.00
Per OTP Voice Call
₹0.00
Per Voice Minute
CPaaS Platform
One platform. Multiple products.
Voice, Video, Call, SMS, and now TTS are live. One developer account, one unified console, and prepaid wallet billing across every product.
SMS API
DLT-compliant transactional & promotional SMS
Send DLT-compliant transactional and promotional SMS with full TRAI compliance. Register sender IDs and templates, manage prepaid wallet billing, and track delivery receipts — all via a single REST API.
- POST /v1/sms/send — dispatch SMS via DLT-approved template
- GET /v1/sms/:id/status — delivery status with DLR details
- GET /v1/sms/messages — paginated message history
- POST /v1/sms/dashboard/sender-ids — register headers
- POST /v1/sms/dashboard/templates — register DLT templates
- DLT compliance + TLV headers for regulatory compliance
Why Developers Choose TETRAX
Your real-time infrastructure. Fully managed.
Building voice, SMS, and video from scratch means managing real-time streaming, signaling protocols, DLT compliance, session tracking, and billing infrastructure. TETRAX abstracts the entire stack so your team ships features, not infrastructure.
Time to first API call
Instant Setup
Sign up, create an application, get your API key, and make your first API call — all within minutes. No servers or infrastructure expertise required.
All products unified
Developer-First
Voice, SMS, and Video APIs share a single console, common access tokens, one SDK, and a consolidated billing layer. No juggling multiple dashboards.
TRAI compliant SMS
Built for India
Full TRAI DLT compliance for SMS, Indian sender IDs, telecom-grade infrastructure, and INR pricing — built specifically for the Indian communications market.
Flat SMS rate
Predictable Pricing
Prepaid wallet billing with flat per-unit rates — no subscriptions, no monthly fees. SMS ₹0.19/seg, Voice ₹0.07/min, Video ₹0.03/min. No surprise bills.
Per OTP call
OTP Voice Calls
Deliver OTP codes via automated voice calls with a single POST request. Each digit is spoken individually for clarity. Wallet-based billing at ₹0.28/call.
Transparent Pricing
No subscriptions. No monthly fees. One prepaid wallet powers Voice, Video, Call, SMS & TTS — top up once and pay only for what you use.
The Prepaid Wallet
Welcome Credit
₹50
Free for 7 days on signup
Min Top-Up
₹10
Instant UPI credit
No Subscriptions
₹0/mo
Pay only for what you use
Balance Tracking
Real-time
Live in your dashboard
* Top up via UPI in the dashboard — funds credit instantly. Every product deducts from the same balance, with full transaction history.
What It Costs In Practice
| Usage | Units | Wallet Cost |
|---|---|---|
| Voice — 1,000 participant minutes | 1,000 min | ₹70 |
| Video — 500 participant minutes | 500 min | ₹15 |
| Call — 100 OTP voice calls | 100 calls | ₹28 |
| SMS — 10,000 segments (bulk campaign) | 10,000 seg | ₹1,900 |
| TTS — 10,000 characters of speech | 10,000 chars | ₹10 |
* Rates are flat for every account. Rate limits (calls/min, concurrent participants) are configured per account — no monthly fee. Contact support to raise yours.
Enterprise Volumes
Need custom volumes, dedicated infrastructure, multi-region deployments, or a custom SLA? Get a tailored solution and volume-based wallet rates for your enterprise workloads.