---
title: Stable Audio 3 Medium Apple Silicon Benchmarks
summary: The 1.4 billion parameter music model. It gives better results for the same brief, but takes roughly three times as long and needs 4.6 GB more disk. It is a separate download and is not yet installed on the reference Mac.
---

# Stable Audio 3 Medium Apple Silicon Benchmarks

The 1.4 billion parameter music model. It gives better results for the same brief, but takes roughly three times as long and needs 4.6 GB more disk. It is a separate download and is not yet installed on the reference Mac.

- Repo: `stabilityai/stable-audio-3-optimized`
- Maker: Stability AI
- Maker page: /resources/groundslate/benchmarks/makers/stability-ai
- Line: Stable Audio 3
- Line page: /resources/groundslate/benchmarks/makers/stability-ai/stable-audio
- License: [Stability AI Community License](https://huggingface.co/stabilityai/stable-audio-3-optimized/blob/main/LICENSE.md)

Three checkpoints from one repo: a small model for sound effects, a small one for music, and a medium one for better music. GroundSlate runs the MLX conversions from Stability's own optimized-runtime repo.

- Size: 5.2 GB
- Tools: generate_music, audio_beats, music_map, mix_audio, list_generations
- Suite: /resources/groundslate/benchmarks/sound

## On each Mac

| Machine | Status | One music bed |
| --- | --- | --- |
| MacBook Pro, Apple M3 Max, 64 GB unified memory | Reference Mac | 8.14s |

## Speed

- One music bed: 8.14s, 7.86× realtime, range 4.81s to 3m 15s, n = 7