Kling 3.0 vs Seedance 2.5 vs MiniMax H3 Max vs Gemini Omni Flash 1.1 for video ads
Clip length, resolution, formats, references and sound for the four video models in MarketingX, and which one fits which kind of ad.
Short answer: pick Seedance 2.5 for the longest takes, up to 30 seconds with sound. Pick Gemini Omni Flash 1.1 when the placement needs 4K. Pick Kling 3.0 when one clip has to hold several shots, and MiniMax H3 Max for fast, silent hooks made in volume. All four run in MarketingX Video Generate on one plan.
Choosing a video model for an ad is mostly a question of limits: how long the clip can run, how sharp it comes out, which frames it fits, how many images of your product it can take in, and whether it brings its own sound. The four models below answer those questions differently.
How do the four models compare?
| Model | Clip length | Resolution | Formats | References | Sound |
|---|---|---|---|---|---|
| Kling 3.0 (Kuaishou) | 3–15 s, or Auto | 720p, 1080p | 16:9, 9:16, 1:1 | Start and end frames | Yes, on by default |
| Seedance 2.5 (ByteDance) | 4–30 s | 480p, 720p, 1080p | Auto, 21:9 to 9:16 | Up to 30 images, 10 clips, 10 tracks | Yes, on by default |
| MiniMax H3 Max (MiniMax) | 5–15 s | 480p, 768p, 1080p | Auto, 21:9 to 9:16 | Up to 9 images, 3 clips | No, silent |
| Gemini Omni Flash 1.1 (Google) | 3–10 s | 360p to 4K | 16:9, 9:16 | Up to 10 images, 3 short clips | No, silent |
Which model should you use for which ad?
Longer product stories: Seedance 2.5
Seedance 2.5 runs from 4 to 30 seconds, five by default, and returns the clip with sound in the same run. It is also the model that can be shown the most: one or two images are read as the start and end frames, and three to thirty images are read as references, alongside up to ten clips and ten audio tracks. That makes it the pick when a product has to look the same from the first second to the last.
Scenes with several shots: Kling 3.0
Kling 3.0 has Multi-shot. Each numbered shot takes its own prompt, up to 512 characters, and its own length; the shots add up to three to fifteen seconds and come back as one clip. For an ad that needs a wide, a close-up and a product shot in a row, that saves writing and cutting three separate clips. Audio is on by default, at 720p or 1080p.
4K and vertical hero shots: Gemini Omni Flash 1.1
Gemini Omni Flash 1.1 is the only one of the four that goes to 4K, in 16:9 or 9:16, for clips of three to ten seconds. It comes back silent, so the voice or the track is added afterwards. When a clip you already have needs changing rather than replacing, its Edit version runs in Video Edit with your clip as the source.
Hooks and volume: MiniMax H3 Max
MiniMax H3 Max makes five to fifteen seconds at up to 1080p, billed per second, and it is the model behind Instant Hook. Its Turbo version takes text and start frames at the same resolutions and lengths, runs faster and costs less per second; references stay on H3 Max. When the job is ten openers to test rather than one finished film, this is the economical choice.
What does each clip still need before it ships?
A generated clip is the middle of an ad, not the whole of it. The silent models need a voice or a track: Text to Speech reads a script in the voice you pick, and Music Generate writes a bed for the cut. Feeds often start muted, so Caption times subtitles to the voice. And one master rarely fits every placement: Video Reframe recuts a clip into 9:16, 1:1 or 4:5.
How do you run the same brief on all four?
- Open Video Generate and write the prompt once: the subject, what it does, how the camera moves and the light.
- Attach a start frame, or references, when the product has to stay exactly the same.
- Set the length and the ratio inside the chosen model's range. The cost shows on the Generate button before you press it.
- Generate, switch the model, and generate again with the same prompt. Compare the takes against each other before you pick one.
Questions people ask
Which AI video model makes the longest clips?
Seedance 2.5, at up to 30 seconds. Kling 3.0 and MiniMax H3 Max go to 15 seconds, and Gemini Omni Flash 1.1 to 10.
Which models generate sound?
Kling 3.0 and Seedance 2.5 return clips with audio by default. MiniMax H3 Max and Gemini Omni Flash 1.1 return silent clips.
Which one supports 4K?
Gemini Omni Flash 1.1, in 16:9 or 9:16. The other three top out at 1080p.
Do I need a separate subscription for each model?
No. All four run inside MarketingX on one plan, drawing from the same credit balance.
Try all four in Video Generate, or start with the model that matches your placement.
