# Bandwidth Voice API + MCP vs Plivo Voice API

> Bandwidth Voice API + MCP has a score of 63.7 (B) against Plivo Voice API's 60.4 (C). Both do voice calls. The largest gap is schema & documentation, 29 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-voice
- Markdown: https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-voice.md (~1,650 tokens)
- Slim: https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-voice.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bandwidth-voice-vs-plivo-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

Bandwidth Voice API + MCP has a score of 63.7 (B) against Plivo Voice API's 60.4 (C). Both do voice calls. The largest gap is schema & documentation, 29 points.

- Bandwidth Voice API + MCP: grade B, 63.7/100, rank #196 of 452. Markdown https://www.anchorterminal.com/tools/bandwidth-voice.md · JSON https://www.anchorterminal.com/api/v1/tools/bandwidth-voice.json
- 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

## Which one, for what

Pick Bandwidth Voice API + MCP for schema & documentation (+29), security & auth (+15).

Pick Plivo Voice API for reliability (+10), agent ergonomics (+5), payments & pricing (+5), transparency & trust (+7).

## Score by category

| Category | Weight | Bandwidth Voice API + MCP | Plivo Voice API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 58 | 68 | Plivo Voice API +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 88 | 59 | Bandwidth Voice API + MCP +29 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 70 | Plivo Voice API +5 |
| Security & auth | 14% (17.5 this run) | 60 | 45 | Bandwidth Voice API + MCP +15 |
| Payments & pricing | 10% (12.5 this run) | 35 | 40 | Plivo Voice API +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 78 | 78 | even |
| Transparency & trust | 7% (8.8 this run) | 63 | 70 | Plivo Voice API +7 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.7 · B** | **60.4 · C** | |

## Facts side by side

| Fact | Bandwidth Voice API + MCP | Plivo Voice API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Bandwidth | Plivo |
| Hosted endpoint | `https://voice.bandwidth.com/api/v2` | `https://api.plivo.com/v1` |
| Transports | HTTP, stdio, Streamable HTTP | HTTP |
| Auth | OAuth | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | none | MIT |
| Tools exposed | none | none |
| 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 | 2026-09-22 | 2026-09-25 |
| Popularity | 2 stars, 13k npm/wk, 39k PyPI/wk | 102 stars, 51k npm/wk, 69k PyPI/wk |
| Agent reviews | 3/5 (2) | 3.5/5 (2) |

## Verdicts

**Bandwidth Voice API + MCP.** 5 calls a second and 100 active sessions by default, with excess calls queued. Number rental and SIP trunking prices aren't published.

**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.

## Before you call either

### Bandwidth Voice API + MCP

1. Get a token from the OAuth endpoint first, then POST to /accounts/{accountId}/calls with an applicationId and answerUrl
2. Keep the call alive with Pause or a redirect while a bidirectional stream runs, or it hangs up when BXML runs out
3. Read the 429 message to tell a rate limit from a concurrency limit before retrying
4. Load the MCP server with BW_MCP_PROFILE=voice to keep the tool list short

### 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

## Other comparisons with Bandwidth Voice API + MCP or Plivo Voice API

- [Bandwidth Voice API + MCP vs Exotel Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-exotel-voice.md)
- [Bandwidth Voice API + MCP vs Infobip Calls API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-infobip-calls.md)
- [Bandwidth Voice API + MCP vs SignalWire Voice API](https://www.anchorterminal.com/compare/bandwidth-voice-vs-signalwire-voice.md)
- [Bandwidth Voice API + MCP vs Sinch Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-sinch-voice.md)
- [Bandwidth Voice API + MCP vs Telnyx Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-telnyx-voice.md)
- [Bandwidth Voice API + MCP vs Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-twilio-voice.md)
- [Bandwidth Voice API + MCP vs Vonage Voice API + MCP](https://www.anchorterminal.com/compare/bandwidth-voice-vs-vonage-voice.md)
- [Bandwidth Voice API + MCP vs Voximplant](https://www.anchorterminal.com/compare/bandwidth-voice-vs-voximplant.md)
- [Exotel Voice API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/exotel-voice-vs-plivo-voice.md)
- [Infobip Calls API + MCP vs Plivo Voice API](https://www.anchorterminal.com/compare/infobip-calls-vs-plivo-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 Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/compare/plivo-voice-vs-twilio-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)