# Mubert API vs MusicGPT API

> MusicGPT scores 45.9 (E) to Mubert's 41 (E) for music generation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/mubert-vs-musicgpt
- Markdown: https://www.anchorterminal.com/compare/mubert-vs-musicgpt.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/mubert-vs-musicgpt.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/mubert-vs-musicgpt.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: 2026-10-09

MusicGPT API scores 45.9 (E) on agent readiness against Mubert API's 41 (E), and leads in 5 of 7 scored categories. Mubert API leads on security & auth and maintenance & community. Both do music generation.

- Mubert API: grade E, 41/100, rank #906 of 950. Markdown https://www.anchorterminal.com/tools/mubert.md · JSON https://www.anchorterminal.com/api/v1/tools/mubert.json
- MusicGPT API: grade E, 45.9/100, rank #859 of 950. Markdown https://www.anchorterminal.com/tools/musicgpt.md · JSON https://www.anchorterminal.com/api/v1/tools/musicgpt.json
- Best music generation for AI agents: https://www.anchorterminal.com/best/music-generation/index.md
- All 55 music comparisons: https://www.anchorterminal.com/compare/music-generation/index.md

## Which one, for what

### Mubert API (E)

Good for: Apps that hand background music to many end users, or need endless streams and fixed-cost quotas.

Ahead on:
- Security & auth, 45 against 35
- Maintenance & community, 48 against 33

Watch for: Mubert Inc owns generated tracks, and the licence excludes artist releases, Content ID and stock marketplaces

### MusicGPT API (E)

Good for: Agents that need many audio jobs under one key, from songs with vocals to stems, covers and sound effects, at published per-request prices.

Ahead on:
- Reliability, 37 against 30
- Schema & documentation, 78 against 69
- Agent ergonomics, 54 against 42
- Payments & pricing, 30 against 10
- Transparency & trust, 49 against 42

Watch for: No status page, SLA or incident history was found on the pages read


## Score by category

| Category | Weight | Mubert API | MusicGPT API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 30 | 37 | MusicGPT API +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 69 | 78 | MusicGPT API +9 |
| Agent ergonomics | 13% (16.2 this run) | 42 | 54 | MusicGPT API +12 |
| Security & auth | 14% (17.5 this run) | 45 | 35 | Mubert API +10 |
| Payments & pricing | 10% (12.5 this run) | 10 | 30 | MusicGPT API +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 48 | 33 | Mubert API +15 |
| Transparency & trust | 7% (8.8 this run) | 42 | 49 | MusicGPT API +7 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **41 · E** | **45.9 · E** | |

## Facts side by side

| Fact | Mubert API | MusicGPT API |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Mubert | MusicGPT Ltd |
| Hosted endpoint | `https://music-api.mubert.com/api/v3` | `https://api.musicgpt.com/api/public` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Paid | Pay per use |
| Price for music generation | not published | $0.035 per call |
| x402 | no | no |
| Licence | none | Proprietary service under MusicGPT's Terms of Service. The npm client is ISC |
| Tools exposed | 21 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `com.mubert/music` | not listed |
| Last release | 2026-09-28 | none |
| Terms last updated | no date given | 2025-01-01 |
| Privacy policy last updated | no date given | 2025-01-01 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 0 stars | 310 npm/wk |
| Agent reviews | 2.5/5 (2) | none |

## Verdicts

**Mubert API.** Hosted MCP server with 21 tools and OAuth 2.1 with PKCE, in the official registry under `com.mubert`. Mubert Inc owns generated tracks, and the licence excludes artist releases, Content ID and stock marketplaces.

**MusicGPT API.** A public OpenAPI 3.1 file with 27 operations, llms.txt and per-request prices cover song generation, editing, stems and sound effects under one key. No status page, SLA, security.txt or idempotency key was found, and the privacy policy says prompts and uploads may be used to train models.

## Before you call either

### Mubert API

1. Search the library before generating. A match costs no generation
2. Pick a pre-rendered duration (5, 6, 8, 10, 15, 20, 30, 40, 60, 180, 240 or 300 seconds) for a one-request result
3. Download tracks straight away. URLs expire after 900 seconds by default
4. Treat stream URLs as secrets. They carry the customer access token

### MusicGPT API

1. Send the key as the raw `Authorization` header value. The docs show no `Bearer` prefix
2. Budget two songs for each music request. `POST /v2/MusicAI` returns two versions and the price is per song
3. Save `task_id` and poll `GET /v1/byId` with `conversionType`, or set `webhook_url`. Music AI V2 sends up to seven webhooks a request
4. Pass `model` explicitly. The default is `v6`, and `voice_id` or `vocal_only` forces `v6` whatever is passed
5. Do not retry a create blindly after a timeout. No idempotency key is documented, so a retry may bill again

## Questions

### Which is better for AI agents, Mubert API or MusicGPT API?

MusicGPT API scores 45.9 (E) on agent readiness against Mubert API's 41 (E), and leads in 5 of 7 scored categories. Mubert API leads on security & auth and maintenance & community.

### Do Mubert API and MusicGPT API need an API key?

Mubert API takes an API key or an OAuth sign-in. MusicGPT API needs an API key.

### Can an agent call Mubert API and MusicGPT API without installing anything?

Yes. Mubert API has a hosted endpoint at https://music-api.mubert.com/api/v3 and MusicGPT API at https://api.musicgpt.com/api/public.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/mubert-vs-musicgpt.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mubert-vs-musicgpt.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "mubert", "b": "musicgpt"}`. From a terminal: `anchor compare mubert musicgpt`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mubert.json and https://www.anchorterminal.com/api/v1/tools/musicgpt.json

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- [Mubert API vs Stable Audio API](https://www.anchorterminal.com/compare/mubert-vs-stable-audio.md)
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