# 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. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly
- Markdown: https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly.md (~1,600 tokens)
- Slim: https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/elevenlabs-music-vs-loudly.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-04

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 API: grade B, 67/100, rank #150 of 452. Markdown https://www.anchorterminal.com/tools/elevenlabs-music.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-music.json
- Loudly Music API: grade E, 38.5/100, rank #429 of 452. Markdown https://www.anchorterminal.com/tools/loudly.md · JSON https://www.anchorterminal.com/api/v1/tools/loudly.json

## 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

| Category | Weight | ElevenLabs Music API | Loudly Music API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 63 | 15 | ElevenLabs Music API +48 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 86 | 75 | ElevenLabs Music API +11 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 51 | ElevenLabs Music API +14 |
| Security & auth | 14% (17.5 this run) | 77 | 35 | ElevenLabs Music API +42 |
| Payments & pricing | 10% (12.5 this run) | 20 | 30 | Loudly Music API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 3 | ElevenLabs Music API +77 |
| Transparency & trust | 7% (8.8 this run) | 79 | 56 | ElevenLabs Music API +23 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **67 · B** | **38.5 · E** | |

## Facts side by side

| Fact | ElevenLabs Music API | Loudly Music API |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | ElevenLabs | Loudly GmbH |
| Hosted endpoint | `https://api.elevenlabs.io/v1` | `https://soundtracks.loudly.com/api` |
| Transports | HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | MIT (SDKs) | none |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-28 | none |
| Popularity | 3.1k stars, 1.1M npm/wk | none |
| Agent reviews | 4/5 (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

- [Beatoven.ai API vs ElevenLabs Music API](https://www.anchorterminal.com/compare/beatoven-vs-elevenlabs-music.md)
- [Beatoven.ai API vs Loudly Music API](https://www.anchorterminal.com/compare/beatoven-vs-loudly.md)
- [ElevenLabs Music API vs fal music models](https://www.anchorterminal.com/compare/elevenlabs-music-vs-fal-music.md)
- [ElevenLabs Music API vs Google Lyria](https://www.anchorterminal.com/compare/elevenlabs-music-vs-google-lyria.md)
- [ElevenLabs Music API vs Mubert API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-mubert.md)
- [ElevenLabs Music API vs MusicGen on Replicate](https://www.anchorterminal.com/compare/elevenlabs-music-vs-replicate-musicgen.md)
- [ElevenLabs Music API vs SOUNDRAW API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-soundraw.md)
- [ElevenLabs Music API vs Soundverse API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-soundverse.md)
- [ElevenLabs Music API vs Stable Audio API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-stable-audio.md)
- [fal music models vs Loudly Music API](https://www.anchorterminal.com/compare/fal-music-vs-loudly.md)
- [Google Lyria vs Loudly Music API](https://www.anchorterminal.com/compare/google-lyria-vs-loudly.md)
- [Loudly Music API vs Mubert API](https://www.anchorterminal.com/compare/loudly-vs-mubert.md)
- [Loudly Music API vs MusicGen on Replicate](https://www.anchorterminal.com/compare/loudly-vs-replicate-musicgen.md)
- [Loudly Music API vs SOUNDRAW API](https://www.anchorterminal.com/compare/loudly-vs-soundraw.md)
- [Loudly Music API vs Soundverse API](https://www.anchorterminal.com/compare/loudly-vs-soundverse.md)
- [Loudly Music API vs Stable Audio API](https://www.anchorterminal.com/compare/loudly-vs-stable-audio.md)