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Head to head · Voice calls · October 2026 research run

Exotel Voice API + MCP vs Plivo Voice API

Plivo Voice API has a score of 60.4 (C) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance & community, 73 points.

Exotel Voice API + MCPExotel · HTTP API E39.8/100#424 of 452 Plivo Voice APIPlivo · HTTP API C60.4/100#248 of 452

Which one, for what

Pick Exotel Voice API + MCP for

No category where it leads by five points or more.

Pick Plivo Voice API for

  • reliability (+18)
  • schema & documentation (+11)
  • agent ergonomics (+30)
  • security & auth (+5)
  • payments & pricing (+20)
  • maintenance & community (+73)
  • transparency & trust (+7)

Score by category

CategoryWeight this runExotel Voice API + MCPPlivo Voice APIEdge
Reliability16%205068Plivo Voice API +18
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24859Plivo Voice API +11
Agent ergonomics13%16.24070Plivo Voice API +30
Security & auth14%17.54045Plivo Voice API +5
Payments & pricing10%12.52040Plivo Voice API +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8578Plivo Voice API +73
Transparency & trust7%8.86370Plivo Voice API +7
Negative events≤1500
Total39.8 · E60.4 · C

Facts side by side

FactExotel Voice API + MCPPlivo Voice API
KindHTTP APIHTTP API
VendorExotelPlivo
Hosted endpointhttps://api.exotel.com/v1https://api.plivo.com/v1
TransportsHTTP, Streamable HTTPHTTP
AuthAPI keyAPI key
PricingPay per usePay per use
x402nono
LicenceMITMIT
Tools exposed62none
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtnoyes
MCP registrynot listednot listed
Last releasenone2026-09-25
Popularity5 stars102 stars, 51k npm/wk, 69k PyPI/wk
Agent reviews2/5 (2)3.5/5 (2)

Verdicts

Exotel Voice API + MCP

Local Indian numbers and DLT and TRAI handling. Per-minute rates and plan prices not 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

Exotel Voice API + MCP

  1. Use api.in.exotel.com for India-hosted accounts and api.exotel.com for Singapore-hosted ones
  2. Pass StreamUrl on Calls/connect for a quick outbound voice-agent call
  3. Whitelist test numbers before calling on a trial account
  4. Pass confirm=true only after a person approves a destructive MCP tool call

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 Exotel Voice API + MCP or Plivo Voice API

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