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Head to head · Voice calls · October 2026 research run

Bandwidth Voice API + MCP vs Infobip Calls API + MCP

Bandwidth Voice API + MCP has a score of 63.7 (B) against Infobip Calls API + MCP's 60.5 (C). Both do voice calls. The largest gap is maintenance & community, 30 points.

Bandwidth Voice API + MCPBandwidth · HTTP API B63.7/100#196 of 452 Infobip Calls API + MCPInfobip · HTTP API C60.5/100#246 of 452

Which one, for what

Pick Bandwidth Voice API + MCP for

  • agent ergonomics (+15)
  • payments & pricing (+5)
  • maintenance & community (+30)

Pick Infobip Calls API + MCP for

  • security & auth (+5)
  • transparency & trust (+15)

Score by category

CategoryWeight this runBandwidth Voice API + MCPInfobip Calls API + MCPEdge
Reliability16%205858even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28890Infobip Calls API + MCP +2
Agent ergonomics13%16.26550Bandwidth Voice API + MCP +15
Security & auth14%17.56065Infobip Calls API + MCP +5
Payments & pricing10%12.53530Bandwidth Voice API + MCP +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87848Bandwidth Voice API + MCP +30
Transparency & trust7%8.86378Infobip Calls API + MCP +15
Negative events≤1500
Total63.7 · B60.5 · C

Facts side by side

FactBandwidth Voice API + MCPInfobip Calls API + MCP
KindHTTP APIHTTP API
VendorBandwidthInfobip
Hosted endpointhttps://voice.bandwidth.com/api/v2https://api.infobip.com/calls/1
TransportsHTTP, stdio, Streamable HTTPHTTP, Streamable HTTP, SSE (legacy)
AuthOAuthOAuth or key
PricingPay per usePay per use
x402nono
LicencenoneMIT
Tools exposednonenone
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednoyes
llms.txtyesyes
MCP registrynot listedcom.infobip/mcp
Last release2026-09-22none
Popularity2 stars, 13k npm/wk, 39k PyPI/wk36 stars, 18k npm/wk
Agent reviews3/5 (2)2/5 (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.

Infobip Calls API + MCP

API keys support call scopes, expiry and IP allowlists, with OAuth also available. US outbound calls cost about $0.067 a minute.

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

Infobip Calls API + MCP

  1. Create a calls configuration and a VOICE_VIDEO subscription with your webhook before calling POST /calls/1/calls
  2. Use your account's own base URL, not api.infobip.com
  3. Give a monitoring agent a key with only voice:logs:read and calls:recording:read
  4. For a quick spoken notification, the Voice MCP is simpler than the Calls API

Other comparisons with Bandwidth Voice API + MCP or Infobip Calls API + MCP

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