Lyria 2 on Sume: one 30 s instrumental clip, no length field

Lyria 2 is a Music Router model on Sume with the id lyria-2. One call writes one 30-second instrumental clip. The row does not list duration_seconds, and Sume refuses that field on it. If you need a longer bed, use an engine that takes a length or join clips yourself.

Fal, which serves it, lists Lyria 2 at $0.1 per 30 seconds of audio and describes it as Google's music generation model with commercial use available (fal Lyria 2, read 2026-10-14). Its inputs there are a prompt, an optional negative prompt and a seed. Sume's inputs are narrower, listed below.

What Sume sends and refuses

Source: the Music Router docs and the Sume pricing code on main, read 2026-10-14.

Cost for a batch of clips

Sume sells at fal's list price times 1.25, so one Lyria 2 clip is $0.125 (list $0.10). Check the credits on GET /v1/music-router/models or the API rate card before you budget.

When to pick another row

Lyria 2 fits a 30-second sting, a Reel bed or a batch of variants, like the nine music variants for one Reel. For a 60 to 190 second bed at one flat price, see Stable Audio 2.5. The full list of which rows take a length is in Music Router duration_seconds.

curl -X POST https://api.sume.com/v1/music-router/generate \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "lyria-2",
    "prompt": "Calm ambient piano with flowing water, soft reverb, 30 second instrumental"
  }'