Five audio-logo options for a product ad: $0.625 with Music Router

Five audio-logo (sonic sting) options for a product ad cost $0.625 on Sume, because every Music Router generation is a flat $0.125. The router has no duration field, so you ask for a 2-second sting in the prompt.

Cost and variants

Pin a model only if you need to. sume/music-auto (default) routes to Lyria 3.5 today, and lyria-3-pro and lyria-3.5 are the other routable ids. Both are charged the same fixed price.

Generate five

Put the length and exclusions in the positive prompt. negative_prompt is not supported.

import os, requests

H = {"Authorization": f"Bearer {os.environ['SUME_API_KEY']}"}
moods = ["warm marimba", "glassy synth", "soft piano", "plucked guitar", "airy choir"]
for i, mood in enumerate(moods):
    r = requests.post("https://api.sume.com/v1/music-router/generate",
        headers={**H, "Idempotency-Key": f"sting-v1-{i}"}, timeout=60,
        json={"model": "sume/music-auto",
              "prompt": f"A 2-second product sting, {mood}, instrumental, no vocals, clean ending"})
    r.raise_for_status()
    print(mood, r.json()["data"]["request_id"])

Limits and gotchas

• You cannot force an exact length. Trim the audio later if needed.
• Read the audio artifact from result.artifacts[] where type is audio.
• Do not ask for a recognisable existing melody.