Stable Audio 3.0 Day-0 Support in ComfyUI：From Sound Effects to Longer, More Musical Tracks

From sound effects to longer, more musical audio

We’re excited to share that Stable Audio 3.0—Stability AI’s new family of music models built for artistic experimentation—is coming to ComfyUI. Trained on fully licensed data, these models bring variable-length generation, on-device-friendly small checkpoints, and stronger musicality for longer structure—so you can go from quick SFX to extended tracks inside the workflows you already use.

Model highlights

• Licensed for commercial use — trained on fully licensed music data.

• Flexible clip length — from quick SFX and short loops to longer tracks (up to about two minutes on Small, six minutes on Medium).

• Lightweight, small models — run Small SFX and Small music on a CPU, no big GPU required.

• Medium for longer music — fuller tracks with stronger structure when you have a GPU.

Available Models

• Small-SFX: Sound effects and short ambiance, up to 2:00,

• Small-Music: Short music and on-device-friendly loops, up to 2:00

• Medium: Longer tracks with stronger structure and musicality, up to ~6:20

Small reaches two minutes (vs. 11s / 47s on Stable Audio Open). Medium goes beyond six minutes when you need length.

• 🤗 Stabilityai/stable-audio-3

• 🤗 Comfy-Org/stable-audio-3 (for ComfyUI)

Examples

Music

A short idea for a complete piece (genre, instruments, mood, length).

Lo-fi hip-hop chill track with mellow electric piano, soft vinyl crackle, subtle synth pads, low-pass filtered drums, percussion loops, and soft plucked bass for a relaxed, dreamy vibe. BPM: 75. Length: 150 seconds

Synthwave 80s retro track with arpeggiated synth leads, analog pads, electric bass, punchy electronic drums, gated reverb snares, and atmospheric FX for nostalgic and vibrant energy. BPM: 110. Length: 180 seconds

Instrument

Single-instrument or small-group clips for production and scoring.

Guitar muted strum loop with tight rhythmic feel. BPM: 100. Length: 8 seconds

Pluck sequence loop with bright resonant tone. BPM: 128. Length: 10 seconds

Sound effects and ambience

Impacts, textures, environments, and motion sounds for pictures and games.

Footsteps on gravel, steady walking pace, close perspective. Length: 8 seconds

Car speeding past at high velocity, doppler effect, realistic whoosh. Length: 3 seconds

One-shot

Brief isolated sounds for drums, UI, transitions, and sample libraries.

Bass pluck with jazzy tone and resonant wooden body. Length: 3 seconds

Latin drums, dynamic Latin drums and percussion ensemble featuring authentic rhythmic patterns. Length: 3 seconds

Get started

1. Update ComfyUI to v0.22.0 or go to Comfy Cloud

2. Go to the left sidebar → Template → Audio category → Choose Stable Audio 3.0 Template

3. For local users, please follow the note in the workflow to download the models and place them in the correct directory

4. Write a prompt, set the duration in seconds, then hit run.

As always, enjoy creating!

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