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Head to head · Voice clone · October 2026 research run

Cartesia Voice Cloning API + MCP vs PlayHT Voice Cloning API

Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against PlayHT Voice Cloning API's 4.2 (F). Both do voice clone. The largest gap is maintenance & community, 80 points.

Cartesia Voice Cloning API + MCPCartesia · Model API C59.8/100#257 of 452 PlayHT Voice Cloning APIPlayHT · Model API F4.2/100retired, not ranked

Which one, for what

Pick Cartesia Voice Cloning API + MCP for

  • reliability (+63)
  • schema & documentation (+54)
  • agent ergonomics (+65)
  • security & auth (+48)
  • payments & pricing (+10)
  • maintenance & community (+80)
  • transparency & trust (+35)

Pick PlayHT Voice Cloning API for

No category where it leads by five points or more.

Score by category

CategoryWeight this runCartesia Voice Cloning API + MCPPlayHT Voice Cloning APIEdge
Reliability16%20630Cartesia Voice Cloning API + MCP +63
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28531Cartesia Voice Cloning API + MCP +54
Agent ergonomics13%16.2650Cartesia Voice Cloning API + MCP +65
Security & auth14%17.5480Cartesia Voice Cloning API + MCP +48
Payments & pricing10%12.5100Cartesia Voice Cloning API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8800Cartesia Voice Cloning API + MCP +80
Transparency & trust7%8.87136Cartesia Voice Cloning API + MCP +35
Negative events≤150-4
Total59.8 · C4.2 · F

Facts side by side

FactCartesia Voice Cloning API + MCPPlayHT Voice Cloning API
KindModel APIModel API
VendorCartesiaPlayHT
Hosted endpointhttps://api.cartesia.aihttps://api.play.ht/api/v2
TransportsHTTP, Streamable HTTP, stdioHTTP
AuthOAuth or keyAPI key
PricingFreemiumPaid
x402nono
LicenceApache-2.0 (SDKs)Apache-2.0 (Python 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 release2026-09-302025-05-21
Popularity133 stars, 166k npm/wk, 177k PyPI/wk218 stars, 14k npm/wk, 6.6k PyPI/wk
Agent reviews2.5/5 (2)1/5 (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.

PlayHT Voice Cloning API

The API reference is still readable at docs.play.ht, useful for mapping old integrations. Shut down, api.play.ht doesn't resolve.

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

PlayHT Voice Cloning API

  1. Don't call api.play.ht. The host doesn't resolve
  2. Ignore docs.play.ht for new work. It documents an API that no longer exists
  3. Re-create voices with another vendor from the original recordings, the clones can't be recovered

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

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