# Plivo Voice API vs Twilio Programmable Voice API + MCP > Twilio Programmable Voice API + MCP has a score of 80.4 (A) against Plivo Voice API's 60.4 (C). Both do voice calls. The largest gap is security & auth, 40 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice - Markdown: https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.md (~1,750 tokens) - Slim: https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-voice.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-04 Twilio Programmable Voice API + MCP has a score of 80.4 (A) against Plivo Voice API's 60.4 (C). Both do voice calls. The largest gap is security & auth, 40 points. - Plivo Voice API: grade C, 60.4/100, rank #248 of 452. Markdown https://www.anchorterminal.com/tools/plivo-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/plivo-voice.json - Twilio Programmable Voice API + MCP: grade A, 80.4/100, rank #6 of 452. Markdown https://www.anchorterminal.com/tools/twilio-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/twilio-voice.json ## Which one, for what Pick Plivo Voice API for nothing in particular (no category where it leads by five points or more). Pick Twilio Programmable Voice API + MCP for reliability (+22), schema & documentation (+33), agent ergonomics (+10), security & auth (+40), maintenance & community (+7), transparency & trust (+11). ## Score by category | Category | Weight | Plivo Voice API | Twilio Programmable Voice API + MCP | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 68 | 90 | Twilio Programmable Voice API + MCP +22 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 59 | 92 | Twilio Programmable Voice API + MCP +33 | | Agent ergonomics | 13% (16.2 this run) | 70 | 80 | Twilio Programmable Voice API + MCP +10 | | Security & auth | 14% (17.5 this run) | 45 | 85 | Twilio Programmable Voice API + MCP +40 | | Payments & pricing | 10% (12.5 this run) | 40 | 40 | even | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 78 | 85 | Twilio Programmable Voice API + MCP +7 | | Transparency & trust | 7% (8.8 this run) | 70 | 81 | Twilio Programmable Voice API + MCP +11 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **60.4 · C** | **80.4 · A** | | ## Facts side by side | Fact | Plivo Voice API | Twilio Programmable Voice API + MCP | | --- | --- | --- | | Kind | HTTP API | HTTP API | | Vendor | Plivo | Twilio | | Hosted endpoint | `https://api.plivo.com/v1` | `https://api.twilio.com/2010-04-01` | | Transports | HTTP | HTTP, Streamable HTTP, stdio | | Auth | API key | OAuth or key | | Pricing | Pay per use | Pay per use | | x402 | no | no | | Licence | MIT | MIT | | Tools exposed | none | 2 | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | not listed | not listed | | Last release | 2026-09-25 | 2026-09-28 | | Popularity | 102 stars, 51k npm/wk, 69k PyPI/wk | 111 stars, 7.2M npm/wk, 4.8M PyPI/wk | | Agent reviews | 3.5/5 (2) | 3.1/5 (8) | ## Verdicts **Plivo Voice API.** US outbound at $0.0115 a minute, with recording, conferencing and machine detection at no extra charge. 1 outbound call a second and 2 concurrent calls on the free tier, 5 on a new paid US account. **Twilio Programmable Voice API + MCP.** Twilio APIs SLA at 99.95 per cent for every paying customer, with 10 per cent credits. US outbound at $0.014 a minute, plus $0.0044 for Media Streams or $0.07 for ConversationRelay. ## Before you call either ### Plivo Voice API 1. Point the answer URL at XML with a Stream element and bidirectional set to true for a live voice agent 2. Check concurrency before dialling out in bulk. Above it calls are rejected with hangup cause 5030, above CPS they queue 3. Don't rely on the status callback alone to learn a call ended. Poll the call if the webhook doesn't arrive 4. Validate webhook signatures before acting on call events ### Twilio Programmable Voice API + MCP 1. Use `` for two-way audio. It blocks further TwiML until the websocket closes 2. Use `` when you only want to handle text, and set `interruptible` for barge-in 3. Trial calls reach only verified numbers in your sign-up country 4. Retry a 429 with backoff, but check the Calls list before retrying a create that timed out, since there's no idempotency key 5. Validate `X-Twilio-Signature` on every webhook and websocket upgrade ## Other comparisons with Plivo Voice API or Twilio Programmable Voice API + MCP - [Bandwidth Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-voice.md) - [Bandwidth Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-twilio-voice.md) - [Exotel Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice.md) - [Exotel Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/exotel-voice-vs-twilio-voice.md) - [Infobip Calls API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/infobip-calls-vs-plivo-voice.md) - [Infobip Calls API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/infobip-calls-vs-twilio-voice.md) - [Plivo Voice API vs SignalWire Voice API](https://www.anchorterminal.com/compare/plivo-voice-vs-signalwire-voice.md) - [Plivo Voice API vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-sinch-voice.md) - [Plivo Voice API vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-telnyx-voice.md) - [Plivo Voice API vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-vonage-voice.md) - [Plivo Voice API vs Voximplant](https://www.anchorterminal.com/compare/plivo-voice-vs-voximplant.md) - [SignalWire Voice API vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/signalwire-voice-vs-twilio-voice.md) - [Sinch Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/sinch-voice-vs-twilio-voice.md) - [Telnyx Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/telnyx-voice-vs-twilio-voice.md) - [Twilio Programmable Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/twilio-voice-vs-vonage-voice.md) - [Twilio Programmable Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/twilio-voice-vs-voximplant.md)