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Head to head · Audio music · October 2026 research run

ElevenLabs Music API vs Loudly Music API

ElevenLabs Music API has a score of 67 (B) against Loudly Music API's 38.5 (E). Both do audio music. The largest gap is maintenance & community, 77 points.

ElevenLabs Music APIElevenLabs · Model API B67/100#150 of 452 Loudly Music APILoudly GmbH · Model API E38.5/100#429 of 452

Which one, for what

Pick ElevenLabs Music API for

  • reliability (+48)
  • schema & documentation (+11)
  • agent ergonomics (+14)
  • security & auth (+42)
  • maintenance & community (+77)
  • transparency & trust (+23)

Pick Loudly Music API for

  • payments & pricing (+10)

Score by category

CategoryWeight this runElevenLabs Music APILoudly Music APIEdge
Reliability16%206315ElevenLabs Music API +48
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28675ElevenLabs Music API +11
Agent ergonomics13%16.26551ElevenLabs Music API +14
Security & auth14%17.57735ElevenLabs Music API +42
Payments & pricing10%12.52030Loudly Music API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8803ElevenLabs Music API +77
Transparency & trust7%8.87956ElevenLabs Music API +23
Negative events≤1500
Total67 · B38.5 · E

Facts side by side

FactElevenLabs Music APILoudly Music API
KindModel APIModel API
VendorElevenLabsLoudly GmbH
Hosted endpointhttps://api.elevenlabs.io/v1https://soundtracks.loudly.com/api
TransportsHTTPHTTP
AuthOAuth or keyAPI key
PricingPaidPay per use
x402nono
LicenceMIT (SDKs)none
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 documentednono
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-09-28none
Popularity3.1k stars, 1.1M npm/wknone
Agent reviews4/5 (2)3/5 (2)

Verdicts

ElevenLabs Music API

Vocals and lyrics in several languages, or forced instrumental, with length set from 3 to 600 seconds. Music API is disabled on the Free plan and pay-as-you-go needs a card.

Loudly Music API

Public OpenAPI 3.0 spec with error schemas for 400, 402, 403, 404 and 500. No status page, changelog, rate limits or 429 guidance.

Before you call either

ElevenLabs Music API

  1. Strip artist and song names from user prompts before calling, or the request breaks the Music Terms
  2. Pin model_id. The API default is still music_v1
  3. Set music_length_ms and force_instrumental: true for background beds. Billing is by minute of audio
  4. On 429, retry system_busy with exponential backoff, but treat too_many_concurrent_requests as a plan limit and queue
  5. Don't plan on the MCP server for music. Its documented tools cover agents and speech

Loudly Music API

  1. Send test=true while wiring up. It returns a dummy song and spends no credits
  2. Call GET /api/ai/genres first. Genre, BPM range and instrument names must match that list
  3. Treat 402 as out of credits and stop, not retry
  4. A 403 on Manta routes means the account flag is off, not a bad key

Other comparisons with ElevenLabs Music API or Loudly Music API

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