Wan 3.0 has no open weights: call it by API on Sume

No. llm-stats reports that there is no open-weight version of Wan 3.0 and that WAN 2.2 remains the last open-source Wan release. Wan 3.0 is reached through hosted APIs, and on Sume you call it with model: "wan-3.0" on POST /v1/videos.

What the report says

The llm-stats launch article names two access paths for Wan 3.0: the fal API and Alibaba Model Studio. It does not offer weights for download.

Calling wan-3.0 on Sume

Sume's video docs list wan-3.0 in the catalog with a duration range of 2-30 seconds, and say audio and video references are honoured by Wan 3.0 along with the Seedance 2.x models and MiniMax H3 models. Limits differ by model, so read supported_resolutions, supported_aspect_ratios and supported_durations from GET /v1/videos/models before you submit.

The call is asynchronous: submit, receive a job id and polling URL, poll until completed, then download from unsigned_urls. Send an Idempotency-Key so a retry returns the original job.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: wan-3-demo-001" \
  -d '{
    "model": "wan-3.0",
    "prompt": "A ceramic mug on a wooden desk, slow push-in, soft window light",
    "duration": 6
  }'

What no open weights means for you

You cannot self-host Wan 3.0, so latency, cost and availability depend on the host. Billing on Sume is provider list times 1.25, and the workspace USD balance is reserved on submit. If you need weights on your own hardware, Wan 2.2 is the last open release by that report; its quality and features differ from 3.0.