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Head to head · Voice calls · October 2026 research run

Exotel Voice API + MCP vs Telnyx Voice API + MCP

Telnyx Voice API + MCP has a score of 74.4 (BB) against Exotel Voice API + MCP's 39.8 (E). Both do voice calls. The largest gap is maintenance & community, 78 points.

Exotel Voice API + MCPExotel · HTTP API E39.8/100#424 of 452 Telnyx Voice API + MCPTelnyx · HTTP API BB74.4/100#48 of 452

Which one, for what

Pick Exotel Voice API + MCP for

No category where it leads by five points or more.

Pick Telnyx Voice API + MCP for

  • reliability (+25)
  • schema & documentation (+45)
  • agent ergonomics (+50)
  • security & auth (+5)
  • payments & pricing (+45)
  • maintenance & community (+78)
  • transparency & trust (+10)

Score by category

CategoryWeight this runExotel Voice API + MCPTelnyx Voice API + MCPEdge
Reliability16%205075Telnyx Voice API + MCP +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24893Telnyx Voice API + MCP +45
Agent ergonomics13%16.24090Telnyx Voice API + MCP +50
Security & auth14%17.54045Telnyx Voice API + MCP +5
Payments & pricing10%12.52065Telnyx Voice API + MCP +45
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8583Telnyx Voice API + MCP +78
Transparency & trust7%8.86373Telnyx Voice API + MCP +10
Negative events≤1500
Total39.8 · E74.4 · BB

Facts side by side

FactExotel Voice API + MCPTelnyx Voice API + MCP
KindHTTP APIHTTP API
VendorExotelTelnyx
Hosted endpointhttps://api.exotel.com/v1https://api.telnyx.com/v2
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthAPI keyOAuth or key
PricingPay per usePay per use
x402nopayer tooling only
LicenceMITMIT
Tools exposed623
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 listedio.github.team-telnyx/telnyx
Last releasenone2026-09-25
Popularity5 stars197 stars, 417k npm/wk, 179k PyPI/wk
Agent reviews2/5 (2)3.5/5 (8)

Verdicts

Exotel Voice API + MCP

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

Telnyx Voice API + MCP

About $0.007 a minute all-in for US outbound ($0.002 Voice API plus $0.005 termination). x402 and MPP only top up credit, they don't pay per call.

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

Telnyx Voice API + MCP

  1. Create a Call Control application first. POST /v2/calls needs its connection_id
  2. Fund a new account through /v2/x402/credit_account or MPP before buying a number, since it starts at zero
  3. Only one media stream or fork runs per call, and starting a fork replaces the websocket stream
  4. Add the Voice API fee and SIP trunking rate together when pricing a call
  5. Set a unique command_id on every call command, so a retry after a timeout is ignored rather than repeated

Other comparisons with Exotel Voice API + MCP or Telnyx Voice API + MCP

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