Can't choose a video model? Send sume/auto and let Sume pick

If you cannot pick among twelve video ids, send model: "sume/auto" to POST /v1/videos and Sume selects the family. The Auto controls default to 720p and 8 seconds and accept 3 to 10 second clips at 16:9 or 9:16. The response shows sume/auto as the model; Sume does not disclose which family served the request.

Request

This is the example from the Video Router docs.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "sume/auto",
    "prompt": "A vertical UGC-style product clip on a desk, natural light",
    "aspect_ratio": "9:16",
    "duration": 5
  }'

What Auto fixes and what it does not

Routing is a pure function of the normalized request and the catalog version, so an idempotent replay gets the same price and the same route.

When to pin instead

Use Auto while you explore and a pinned id when price or length matters. Anything past 10 seconds, or any quote you need to reproduce per model, needs a catalog id such as wan-3.0 or seedance-2.5.

Costs and holds

Auto is priced from the normalized request, and the same request gets the same price on replay. Because Sume does not disclose the family, do not build features that depend on which model ran; treat it as one service with one contract.

Sume reserves the estimated price at submit, so that amount must be free in the balance when you send the request. If it is not, the call fails with 402 insufficient_credits before any provider work starts.