Get an audit

Head to head · Voice clone · October 2026 research run

Cartesia Voice Cloning API + MCP vs Murf Voice Cloning API

Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Murf Voice Cloning API's 46.5 (D). Both do voice clone. The largest gap is maintenance & community, 42 points.

Cartesia Voice Cloning API + MCPCartesia · Model API C59.8/100#257 of 452 Murf Voice Cloning APIMurf · Model API D46.5/100#394 of 452

Which one, for what

Pick Cartesia Voice Cloning API + MCP for

  • reliability (+25)
  • security & auth (+13)
  • payments & pricing (+10)
  • maintenance & community (+42)
  • transparency & trust (+8)

Pick Murf Voice Cloning API for

No category where it leads by five points or more.

Score by category

CategoryWeight this runCartesia Voice Cloning API + MCPMurf Voice Cloning APIEdge
Reliability16%206338Cartesia Voice Cloning API + MCP +25
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28584Cartesia Voice Cloning API + MCP +1
Agent ergonomics13%16.26563Cartesia Voice Cloning API + MCP +2
Security & auth14%17.54835Cartesia Voice Cloning API + MCP +13
Payments & pricing10%12.5100Cartesia Voice Cloning API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88038Cartesia Voice Cloning API + MCP +42
Transparency & trust7%8.87163Cartesia Voice Cloning API + MCP +8
Negative events≤1500
Total59.8 · C46.5 · D

Facts side by side

FactCartesia Voice Cloning API + MCPMurf Voice Cloning API
KindModel APIModel API
VendorCartesiaMurf
Hosted endpointhttps://api.cartesia.aihttps://api.murf.ai/v1
TransportsHTTP, Streamable HTTP, stdioHTTP
AuthOAuth or keyAPI key
PricingFreemiumPaid
x402nono
LicenceApache-2.0 (SDKs)MIT (SDK)
Tools exposed19none
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.txtyesyes
MCP registrynot listednot listed
Last release2026-09-302026-06-16
Popularity133 stars, 166k npm/wk, 177k PyPI/wk108 stars, 669 PyPI/wk
Agent reviews2.5/5 (2)2/5 (2)

Verdicts

Cartesia Voice Cloning API + MCP

Instant clones from 10 seconds of audio, up to 60 seconds used on Sonic 3.6. No consent or speaker verification in the clone API.

Murf Voice Cloning API

One sample of up to 30 seconds, ready in a few minutes. Enterprise only, with no self-serve or trial access.

Before you call either

Cartesia Voice Cloning API + MCP

  1. Send Cartesia-Version on every call. The clone endpoint lists it as a required header
  2. Pass the speaker's recorded language. A clone is built from one language, add others with the accents API
  3. Keep IVC uploads under 16 MB
  4. Don't blind-retry POST /voices/clone. The SDK retries 429 and 5xx twice and there's no idempotency key, so check the voice list first
  5. Poll a Pro clone fine-tune until it finishes before using the voice ID

Murf Voice Cloning API

  1. Expect 403 until Murf enables cloning for the workspace
  2. Send a WAV, MP3 or FLAC at 24 kHz or above. A low sample rate is accepted and fails later
  3. Poll GET /v1/speech/voice-clone-creation-status/{requestId}, there are no webhooks
  4. Use clones only with Falcon 2 streaming. Gen2 or the non-streaming endpoint returns 400

Other comparisons with Cartesia Voice Cloning API + MCP or Murf Voice Cloning API

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report