10 stream alert stings from the music router: $1.25 on Sume

Ten stream alert stings cost $1.25 on Sume's music router, since every generation is a flat $0.125 no matter how short the track is. A 2-second sting costs the same as a 2-minute song, so batch several ideas per prompt only if you plan to cut them apart.

Flat price means you pay for rerolls

Plan for failed takes. The table assumes some rerolls on top of ten keepers.

Prompt for a very short sound

There is no duration field, so say it in the prompt. Short lengths may not be honored exactly; measure each file and trim it afterward.

curl -X POST https://api.sume.com/v1/music-router/generate \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: sting-follow-03" \
  -d '{"prompt": "A 2-second bright synth sting, rising, ends clean. Instrumental, no vocals, no reverb tail.",
       "metadata": {"alert": "follow", "take": 3}}'

Gotchas

The music model is built for songs, not sound effects, so expect to audition. negative_prompt must stay empty. Trim and normalize in a Timeline audio job ($0.01) or in your own tool before shipping to your stream software.