Seedance 2.0 vs Gemini Omni Flash: inputs, audio and price
Seedance 2.0 makes 4–15 s clips with optional audio and audio references; Gemini Omni Flash 1.1 makes 3–10 s clips up to 4K, always with sound.
Seedance 2.0 vs Gemini Omni Flash, by API: they differ in clip length, sound, reference inputs and editing. On Sume's video API, Seedance 2.0 makes 4–15 second clips at 480p to 1080p in six aspect ratios, with audio optional and image, video and audio references. Gemini Omni Flash 1.1 makes 3–10 second clips from 360p up to 4K in 16:9 or 9:16, always with synced audio, takes image and video references but not audio, and can also edit an existing clip from a prompt.
These are the limits of seedance-2 and gemini-omni-flash-1.1 on Sume; other hosts may set different ones. They come from Video generation, Video Router and the catalog and pricing code, read on 2026-09-28. Which one looks better for a shot is a test you run on your own prompts.
How do Seedance 2.0 and Gemini Omni Flash differ?
| Item | Seedance 2.0 (`seedance-2`) | Gemini Omni Flash 1.1 (`gemini-omni-flash-1.1`) |
|---|---|---|
| Duration | 4–15 s | 3–10 s |
| Resolutions | 480p, 720p, 1080p | 360p, 720p, 1080p, 4K |
| Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | 16:9, 9:16 |
| First and last frame | Yes | Yes |
| References | Image, video and audio | Up to 10 images and 3 videos (each ≤ 3 s); no audio |
| Audio track | Optional | Always on; generate_audio: false is rejected |
| Edit an existing clip | No | Yes, with video_url on the Video Router |
| Price basis | $0.0175 per 1,000 video tokens | Per second: $0.0375 at 360p, $0.125 at 720p, $0.1875 at 1080p, $0.375 at 4K |
Which one can make a silent clip?
On Sume, only Seedance 2.0. Gemini Omni Flash 1.1 always produces native synced audio, and a request with generate_audio: false is rejected. If you plan to lay your own voiceover or music over the clip, Seedance lets you skip the generated track; with Omni Flash you replace or mute it afterwards. Seedance also takes audio references, which Omni Flash does not.
Which one can edit a video I already have?
Gemini Omni Flash 1.1. Send video_url and a prompt that describes the change to POST /v1/video-router/generate (Video Router). Seedance 2.0 has no edit mode on Sume. Edit a video with a prompt covers the request and its limits.
Which one costs less for a 10-second clip?
At 720p and 1080p, the two resolutions both offer, Gemini Omni Flash 1.1 reserves less for a 10-second 16:9 clip. Seedance counts video tokens (width × height × seconds × 24 fps ÷ 1,024), so its price grows with the frame size; Omni Flash charges a flat rate per second for each resolution. Amounts below are reserved on submit at the provider's list price × 1.25, plus a 5.5% agent fee by default.
| 10-second clip | Reserved |
|---|---|
seedance-2, 480p | $1.76 |
seedance-2, 720p | $3.78 |
seedance-2, 1080p | $8.51 |
gemini-omni-flash-1.1, 360p | $0.38 |
gemini-omni-flash-1.1, 720p | $1.25 |
gemini-omni-flash-1.1, 1080p | $1.88 |
gemini-omni-flash-1.1, 4K | $3.75 |
Which should I pick?
- Pick Seedance 2.0 for clips of 11–15 seconds, for 21:9, 4:3, 1:1 or 3:4 frames, for a silent clip, or for audio references.
- Pick Gemini Omni Flash 1.1 for 4K or 360p output, for sound on every clip, or to edit a clip you already have.
- For more than 15 seconds in one generation, neither fits; Seedance 2.5 runs 4–30 seconds.
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