API do Suno Fade

What is Suno Fade?

Suno Fade, model ID suno-ai/fade, adds a fade in, a fade out, or both to a clip you already have. Like the other Suno edits it works on the output of an earlier Suno generation: pass that clip_id, then set fade_in_s for the length of the fade at the start and fade_out_s for the length of the fade before the end. At least one of the two is required. There is no model version and no new music is generated, only a volume change at the edges. You can name the result with title. The task returns a new clip and leaves the source untouched. It is the finishing step after a crop or any generation that ends on a hard stop.

Key features of Suno Fade

Four features cover how the fade call works.

What Suno Fade is best for

• Smoothing abrupt endings

  Add a few seconds of fade_out_s to songs that stop on a hard cut.

• Finishing cropped clips

  A crop leaves sharp edges. A short fade on both ends makes a preview sound finished.

• Background music

  A slow fade in lets a track enter under a voice-over or a video without a jump in volume.

• Clean loop points

  Short fades at both ends help clips join when they play back to back.

• Consistent playlists

  Apply the same fade lengths to every track so starts and endings match across a set.

Suno Fade use cases

A video editor can fade the music under a clip by sending the user's chosen fade lengths straight to fade_in_s and fade_out_s before rendering. A preview pipeline can run Suno Crop to get a 30-second range and then call fade with a short fade on each end, so every preview starts and stops cleanly. A podcast tool can add a long fade out to an intro theme so it sits under the host. Once the fade is done, the Suno WAV Download API gives you the result as a WAV file for mastering.

Suno Fade API examples

Fade and the other Suno edits share the Suno edit docs.

curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "suno-ai/fade",
    "input": {
      "clip_id": "1901ec96-72c6-4c26-8e56-91028ca6070d",
      "fade_in_s": 3,
      "fade_out_s": 5
    }
  }'

You receive a task_id on submission. Poll GET /v1/tasks/<task_id> until the faded clip is ready, or add a callback_url outside input for a webhook when it finishes.