Kling 4.0 Omni Reference takes 15 references; Sume limits compared

fal's Kling 4.0 explainer says Omni Reference accepts up to 15 references and the model takes up to 10 keyframes. Sume's kling-3 takes no reference images or videos. For reference-to-video on Sume use wan-3.0 (up to 10 images, 5 videos and 5 audio files) or gemini-omni-flash-1.1 (up to 10 images and 3 videos).

Reference limits (read 2026-10-04)

Kling 4.0 is not in the Sume catalog and its API is not yet published in the sources I read, so the first row is context only.

Send references on Sume

References go in input_references. Each entry is an image object. If you also send frame_images, Sume treats the request as image-to-video and the references are not used as guidance.

curl -X POST "https://api.sume.com/v1/videos" \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "wan-3.0",
    "prompt": "The two products rotate on a marble table",
    "duration": 10,
    "resolution": "720p",
    "input_references": [
      {"type": "image_url", "image_url": {"url": "https://example.com/a.png"}},
      {"type": "image_url", "image_url": {"url": "https://example.com/b.png"}}
    ]
  }'

Check the live limits

Sume's per-model limits are in the catalog, and supported_input_references lists which types a model accepts. Read it before you build a reference workflow.

If you need more than 10 images

Neither Wan 3.0 nor Gemini Omni Flash 1.1 takes more than 10 reference images on Sume. Pick the most informative ten, or split the scene into shots and render them separately, then join them on the Timeline endpoint.