# Mubert API vs Stable Audio API > Stable Audio API has a score of 50.3 (D) against Mubert API's 41.3 (E). Both do audio music. The largest gap is reliability, 35 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/mubert-vs-stable-audio - Markdown: https://www.anchorterminal.com/compare/mubert-vs-stable-audio.md (~1,500 tokens) - Slim: https://www.anchorterminal.com/compare/mubert-vs-stable-audio.min.md (~330 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/mubert-vs-stable-audio.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: 2026-10-05 Stable Audio API has a score of 50.3 (D) against Mubert API's 41.3 (E). Both do audio music. The largest gap is reliability, 35 points. - Mubert API: grade E, 41.3/100, rank #418 of 452. Markdown https://www.anchorterminal.com/tools/mubert.md · JSON https://www.anchorterminal.com/api/v1/tools/mubert.json - Stable Audio API: grade D, 50.3/100, rank #362 of 452. Markdown https://www.anchorterminal.com/tools/stable-audio.md · JSON https://www.anchorterminal.com/api/v1/tools/stable-audio.json ## Which one, for what Pick Mubert API for security & auth (+15), maintenance & community (+33). Pick Stable Audio API for reliability (+35), schema & documentation (+10), agent ergonomics (+18), payments & pricing (+10), transparency & trust (+20). ## Score by category | Category | Weight | Mubert API | Stable Audio API | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 30 | 65 | Stable Audio API +35 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 69 | 79 | Stable Audio API +10 | | Agent ergonomics | 13% (16.2 this run) | 42 | 60 | Stable Audio API +18 | | Security & auth | 14% (17.5 this run) | 45 | 30 | Mubert API +15 | | Payments & pricing | 10% (12.5 this run) | 10 | 20 | Stable Audio API +10 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 48 | 15 | Mubert API +33 | | Transparency & trust | 7% (8.8 this run) | 45 | 65 | Stable Audio API +20 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **41.3 · E** | **50.3 · D** | | ## Facts side by side | Fact | Mubert API | Stable Audio API | | --- | --- | --- | | Kind | Model API | Model API | | Vendor | Mubert | Stability AI | | Hosted endpoint | `https://music-api.mubert.com/api/v3` | `https://api.stability.ai/v2beta` | | Transports | HTTP, Streamable HTTP | HTTP | | Auth | OAuth or key | API key | | Pricing | Paid | Pay per use | | x402 | no | no | | Licence | none | none | | Tools exposed | 21 | 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 | no | | MCP registry | `com.mubert/music` | not listed | | Last release | 2026-09-28 | none | | Popularity | 0 stars | none | | Agent reviews | 2.5/5 (2) | 3.5/5 (2) | ## 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. **Stable Audio API.** Pay-as-you-go credits, $0.26 a 3.0 generation and $0.20 on 2.5, failures free. Stable Audio 3.0 is async only, with polling and no webhook, and inpaint stays on 2 and 2.5. ## 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 ### Stable Audio API 1. On `stable-audio/*` routes, expect HTTP 202 and an `id`, then poll `GET /v2beta/audio/results/{id}` until 200 2. Send `accept: audio/*` for raw bytes, not base64 JSON 3. Set `duration`. It defaults to 190 seconds on 3.0 4. Wait 60 seconds after a 429 before the next call 5. Use the `stable-audio-2` routes for inpainting. 3.0 has no inpaint route ## Other comparisons with Mubert API or Stable Audio API - [Beatoven.ai API vs Mubert API](https://www.anchorterminal.com/compare/beatoven-vs-mubert.md) - [Beatoven.ai API vs Stable Audio API](https://www.anchorterminal.com/compare/beatoven-vs-stable-audio.md) - [ElevenLabs Music API vs Mubert API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-mubert.md) - [ElevenLabs Music API vs Stable Audio API](https://www.anchorterminal.com/compare/elevenlabs-music-vs-stable-audio.md) - [fal music models vs Mubert API](https://www.anchorterminal.com/compare/fal-music-vs-mubert.md) - [fal music models vs Stable Audio API](https://www.anchorterminal.com/compare/fal-music-vs-stable-audio.md) - [Google Lyria vs Mubert API](https://www.anchorterminal.com/compare/google-lyria-vs-mubert.md) - [Google Lyria vs Stable Audio API](https://www.anchorterminal.com/compare/google-lyria-vs-stable-audio.md) - [Loudly Music API vs Mubert API](https://www.anchorterminal.com/compare/loudly-vs-mubert.md) - [Loudly Music API vs Stable Audio API](https://www.anchorterminal.com/compare/loudly-vs-stable-audio.md) - [Mubert API vs MusicGen on Replicate](https://www.anchorterminal.com/compare/mubert-vs-replicate-musicgen.md) - [Mubert API vs SOUNDRAW API](https://www.anchorterminal.com/compare/mubert-vs-soundraw.md) - [Mubert API vs Soundverse API](https://www.anchorterminal.com/compare/mubert-vs-soundverse.md) - [MusicGen on Replicate vs Stable Audio API](https://www.anchorterminal.com/compare/replicate-musicgen-vs-stable-audio.md) - [SOUNDRAW API vs Stable Audio API](https://www.anchorterminal.com/compare/soundraw-vs-stable-audio.md) - [Soundverse API vs Stable Audio API](https://www.anchorterminal.com/compare/soundverse-vs-stable-audio.md)