Sume auto or a pinned video model: what changes past 10 seconds

Use sume/auto when a 3 to 10 second clip at 16:9 or 9:16 is enough, and pin a model id when you need more. The docs describe Auto's create controls as defaulting to 720p and 8 seconds, with 3 to 10 second clips at 16:9 or 9:16. A 15 or 30 second clip, a 21:9 frame or a specific reference setup is a reason to pin.

What Auto gives up

Auto's responses echo sume/auto and Sume does not disclose which family ran, so you cannot build a workflow that depends on one model's look. That is the point for a quick clip and a drawback for a series that needs consistency.

When to pin

The rest of the catalog is explicit pass-through: you choose the id, Sume validates the request against that model's envelope, and the receipt names the model.

Migrating

Auto is a model value on POST /v1/videos, so moving from Auto to a pinned model is one field. Keep your Idempotency-Key scheme per request so a retried submit returns the original job.