falAudio to audioComing soon

fal-ai/stable-audio-25/audio-to-audio

Name: fal-ai/stable-audio-25/audio-to-audio
Brand: fal

fal-ai/stable-audio-25/audio-to-audio 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

$0.26 per audio 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
`prompt` required	text	—	The prompt to guide the audio generation
`audio_url` required	URL or file	—	The audio clip to transform
`strength`	number 0.01 to 1	0.8	Sometimes referred to as denoising, this parameter controls how much influence the `audio_url` parameter has on the generated audio. A value of 0 would yield audio that is identical to the input. A value of 1 would be as if you passed in no audio at all.
`num_inference_steps`	number (whole) 4 to 8	8	The number of steps to denoise the audio for
`total_seconds`	number (whole) 1 to 190	—	The duration of the audio clip to generate. If not provided, it will be set to the duration of the input audio.
`guidance_scale`	number 1 to 25	1	How strictly the diffusion process adheres to the prompt text (higher values make your audio closer to your prompt).
`seed`	number (whole)	—

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/stable-audio-25/audio-to-audio",
    "input": {
      "prompt": "Post rock, guitars, bass, strings, euphoric, up-lifting, moody, flowing, raw, epic",
      "audio_url": "https://v3.fal.media/files/panda/1-0iezBUIePBa3Sz5YY5B_tmpy1jyshw9.wav"
    }
  }'