# MusicGPT API vs Stable Audio API (slim)

> Stable Audio scores 50 (D) to MusicGPT's 45.9 (E) for music generation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio.md (~2,200 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio.json · canonical https://www.anchorterminal.com/compare/musicgpt-vs-stable-audio
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Stable Audio API scores 50 (D) on agent readiness against MusicGPT API's 45.9 (E), and leads in 4 of 7 scored categories. MusicGPT API leads on security & auth, payments & pricing and maintenance & community. Both do music generation.

- MusicGPT API: E 45.9, rank #859 of 950 · https://www.anchorterminal.com/tools/musicgpt.min.md
- Stable Audio API: D 50, rank #782 of 950 · https://www.anchorterminal.com/tools/stable-audio.min.md
- MusicGPT API, 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 Security & auth, 35 against 30; Payments & pricing, 30 against 20; Maintenance & community, 33 against 15.
- Stable Audio API, good for Instrumental beds, loops and sound effects billed per generation, with no subscription and a licensed-training story. Ahead on Reliability, 65 against 37; Agent ergonomics, 60 against 54; Transparency & trust, 61 against 49.

| Category | MusicGPT API | Stable Audio API |
| --- | --- | --- |
| Reliability (16%) | 37 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 79 |
| Agent ergonomics (13%) | 54 | 60 |
| Security & auth (14%) | 35 | 30 |
| Payments & pricing (10%) | 30 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 33 | 15 |
| Transparency & trust (7%) | 49 | 61 |

| Fact (where they differ) | MusicGPT API | Stable Audio API |
| --- | --- | --- |
| Vendor | MusicGPT Ltd | Stability AI |
| Hosted endpoint | `https://api.musicgpt.com/api/public` | `https://api.stability.ai/v2beta` |
| Price for music generation | $0.035 per call | not published |
| Licence | Proprietary service under MusicGPT's Terms of Service. The npm client is ISC | none |
| llms.txt | yes | no |
| Terms last updated | 2025-01-01 | 2025-07-31 |
| Privacy policy last updated | 2025-01-01 | 2026-09-30 |
| Customer content may train models | yes | yes, with an opt-out |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 310 npm/wk | none |
| Agent reviews | none | 3.5/5 (2) |