falAudio to audioComing soon

fal-ai/ace-step/audio-outpaint

Name: fal-ai/ace-step/audio-outpaint
Brand: fal

fal-ai/ace-step/audio-outpaint is an audio to audio tool from fal that runs in the background and returns audio. Coming soon: listed with its price, not yet open to runs.

This tool is listed but not yet available to run.

Priced by usage

Pricing

$0.00026 per second. Measured from the input file. The final charge comes from usage.

Limits

Runs: In the background
Returns: audio
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`audio_url` required	URL or file	—	URL of the audio file to be outpainted.
`extend_before_duration`	number 0 to 107	0	Duration in seconds to extend the audio from the start.
`extend_after_duration`	number 0 to 107	30	Duration in seconds to extend the audio from the end.
`tags` required	text	—	Comma-separated list of genre tags to control the style of the generated audio. Can also be supplied as `prompt`.
`lyrics`	text		Lyrics to be sung in the audio. If not provided or if [inst] or [instrumental] is the content of this field, no lyrics will be sung. Use control structures like [verse], [chorus] and [bridge] to control the structure of the song.
`number_of_steps`	number (whole) 3 to 60	27	Number of steps to generate the audio.
`seed`	number (whole)	—	Random seed for reproducibility. If not provided, a random seed will be used.
`scheduler`	one of euler, heun	euler	Scheduler to use for the generation process.
`guidance_type`	one of cfg, apg, cfg_star	apg	Type of CFG to use for the generation process.
`granularity_scale`	number (whole) -100 to 100	10	Granularity scale for the generation process. Higher values can reduce artifacts.
`guidance_interval`	number 0 to 1	0.5	Guidance interval for the generation. 0.5 means only apply guidance in the middle steps (0.25 * infer_steps to 0.75 * infer_steps)
`guidance_interval_decay`	number 0 to 1	0	Guidance interval decay for the generation. Guidance scale will decay from guidance_scale to min_guidance_scale in the interval. 0.0 means no decay.
`guidance_scale`	number 0 to 200	15	Guidance scale for the generation.
`minimum_guidance_scale`	number 0 to 200	3	Minimum guidance scale for the generation after the decay.
`tag_guidance_scale`	number 0 to 10	5	Tag guidance scale for the generation.
`lyric_guidance_scale`	number 0 to 10	1.5	Lyric guidance scale for the generation.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "fal-ai/ace-step/audio-outpaint",
    "input": {
      "audio_url": "https://storage.googleapis.com/falserverless/example_inputs/ace-step-audio-to-audio.wav",
      "tags": "lofi, hiphop, drum and bass, trap, chill"
    }
  }'