audio-to-audio
ACE-Step Audio Outpaint generates seamless start or end extensions that match the original, ideal for intros, outros and longer tracks. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Idle
Your request will cost $0.0002 per run.
For $1 you can run this model approximately 5000 times.
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README
ace-step/audio-outpaint 🎵
ACE-Step Audio Outpaint is an intelligent music extension model from WaveSpeedAI that seamlessly expands existing audio tracks — adding new intros, outros, or transitions while keeping the same rhythm, tone, and emotion.
🌟 Key Features
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🎧 Extend Before or After Add new audio segments before the beginning or after the end of your original clip.
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🎶 Natural Transitions Newly generated audio blends smoothly with the existing material — no abrupt changes or mismatched tones.
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🕒 Flexible Duration Extend by any length up to 4 minutes, perfect for building full-length versions or looping tracks.
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🎼 Style & Theme Control Use tags (like lofi, hiphop, drum and bass, trap, chill) to define the musical direction of the extension.
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🔁 Creative Consistency Keeps harmony, rhythm, and production style consistent with the original track.
⚙️ Parameters
| Parameter | Description |
|---|---|
| audio* | Upload or link to an existing audio file (MP3 / WAV). |
| tags* | Describe the desired genre or mood of the extended section. |
| extend_before_duration | Duration (in seconds) to generate before the start of the original audio. |
| extend_after_duration | Duration (in seconds) to generate after the end of the original audio. |
| lyrics | (Optional) Add or modify lyrics for the new section. |
| seed | Control randomness — use fixed seeds for reproducibility, -1 for variation. |
💡 Use Cases
- 🎵 Add custom intros — Build a thematic or ambient start for your track.
- 🎚 Create extended mixes — Add smooth endings or looping sections for DJ sets.
- 🎧 Lengthen instrumentals — Extend beats or melodic sections for performance or remixing.
- 🎬 Audio production & film — Stretch soundscapes and background tracks for cinematic timing.
💰 Pricing
| Metric | Price |
|---|---|
| Per second of generated audio | $0.0002 / s |