Which Sume video models accept an audio reference?
Seven Sume video models take reference audio: the four Seedance 2.x ids, Wan 3.0 and the two MiniMax H3 models. Kling, Grok and Gemini Omni Flash do not.
Seven ids in Sume's video catalog accept reference audio: seedance-2.5, seedance-2, seedance-2-fast, seedance-2-mini, wan-3.0, minimax-h3 and minimax-h3-max. The docs group the four Seedance ids as "the Seedance 2.x models". kling-3, grok-imagine-video-1.5, gemini-omni-flash-1.1 and the Higgsfield motion-transfer model do not.
Source: the capability flags in Sume's catalog and the video docs, read 2026-10-01. A model that does not list audio_url in supported_input_references rejects it.
What are the per-model limits?
Only Wan and MiniMax publish numbers in the catalog. Seedance limits are not stated there, so check the live model list before you build around a count.
| Model | Reference audio |
|---|---|
wan-3.0 | up to 5 files, 15 seconds combined |
minimax-h3, minimax-h3-max | up to 3 files of 2 to 15 seconds, 15 combined; images, videos and audios up to 12 together; audio cannot be the only reference |
seedance-2.5, seedance-2, seedance-2-fast, seedance-2-mini | supported; limits not listed in the catalog |
kling-3, grok-imagine-video-1.5, gemini-omni-flash-1.1 | not accepted |
Which models reject reference audio?
Per the catalog, kling-3, grok-imagine-video-1.5, gemini-omni-flash-1.1 and the Higgsfield motion-transfer model do not list audio_url, so they reject it.
How do I check a model before I send audio?
Read supported_input_references on the model list; it should include audio_url. Then send the file in input_references.
curl https://api.sume.com/v1/videos/models \
-H "Authorization: Bearer $SUME_API_KEY" \
| grep -o '"supported_input_references":[^]]*]'Sources
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