Voice API
Place, receive, and control calls from any app with a single REST API. Carrier-grade quality across 190+ countries, billed per second.
- 190+
- countries
- <50ms
- media latency
- 99.99%
- uptime SLA
curl -X POST https://api.conversa.in/v1/calls \
-H "Authorization: Bearer $API_KEY" \
-d from="+14155550100" \
-d to="+919000000000" \
-d url="https://yourapp.com/answer.xml"Everything you need to ship Voice API
Outbound & inbound
Originate calls or handle incoming calls with programmable answer flows.
Call control
Play audio, gather input, transfer, record, and hang up via simple verbs.
Per-second billing
Pay only for connected time — no minimum durations or channel caps.
Global routing
Least-cost routing over direct carrier connections in 190+ countries.
Built for how you use Voice API
- Voice OTP & alerts
- Automated reminders
- Notifications
- Custom call flows
SLA
99.99%
uptime SLA
Enterprise-grade reliability with 24/7 support, dedicated routing, and transparent status reporting.
Common questions
How am I billed?
Per second of connected call time, with transparent per-destination rates.
Can I control a live call?
Yes — modify in-progress calls (transfer, play, record) via the call update endpoint.
More Voice products
Every Conversa product shares the same API, dashboard, and billing.
Ready to launch Voice API?
Get API keys in minutes. Pay only for what you use.