Kamailio vs Plivo Voice API
Kamailio
kamailio.org
Plivo Voice API
plivo.comSide by side
| Figure | Kamailio | Plivo Voice API |
|---|---|---|
| Price from | Free | $0.01/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 3 |
| Spec score · Voice APIs | 7.8 (#13) | 8.1 (#8) |
| Founded | 2001 | 2011 |
| Integrations | The project lists backend support including MySQL, PostgreSQL, Oracle, Radius, LDAP, Redis, Cassandra, MongoDB, and Memcached. | Listed integrations include Microsoft Power Automate, Zapier, n8n, Pipedream, Tray, and EngageBay for voice and other Plivo communication workflows. |
| Security | Listed security features include Digest SIP user authentication, authorization through ACL or group membership, and IP and network authentication. | Plivo says customer data is logically separated, encrypted in transit with TLS 1.2 or greater, and encrypted at rest with AES-256. |
| Support | Community support is offered free on a best effort basis through mailing lists, Matrix, and IRC. | Plivo says it responds to priority 1 business-critical incidents around the clock, 365 days a year. |
Plans
Plivo Voice API
- Pay as you goPriced on request
- Voice API pay as you go$0.01 a month
- Enterprise$1,000 a month
In their own words
Plivo Voice API
Plivo Voice API lets web and mobile applications make and receive calls programmatically, play audio, record conversations, and build interactive voice applications. It connects calls across PSTN, SIP, and WebRTC endpoints. Features include queues, conferences, text to speech, dual-channel recording, DTMF input, speech recognition, answering machine detection, voicemail transcription, and custom caller ID. Its Audio Streams API sends raw audio from active calls over WebSocket for transcription, voice AI, analytics, or custom processing. Plivo lists SDKs for Python, Node.js, Ruby, PHP, Java,.NET, and Go, along with integrations including Zapier, n8n, Pipedream, Tray, EngageBay, and Microsoft Power Automate. The service is listed for Android, iOS, web, and API. The Voice API pay-as-you-go plan is listed at $0.01 a month; call routes and features have separate rates. Calls are billed in 60-second increments. Pay-as-you-go accounts receive $10 in free credits without a credit card. Plivo was founded in 2011 and is headquartered in Austin, Texas.