Mixer AI
Kling 4.0 vs Gemini Omni 1.2 Flash: specs and price
Kling 4.0 — maximum duration: 30 s; input videos: up to 5. Gemini Omni 1.2 Flash — resolutions: 360p / 720p / 1080p / 4K; input photos: up to 10.
When to choose Kling 4.0 and when Gemini Omni 1.2 Flash
Kling 4.0
- Maximum duration: 30 s vs 15 s for Gemini Omni 1.2 Flash
- Input videos: up to 5 vs 1, required for Gemini Omni 1.2 Flash
- Input audio files: up to 3 vs No for Gemini Omni 1.2 Flash
- Aspect ratios: 5 vs 2 for Gemini Omni 1.2 Flash
Gemini Omni 1.2 Flash
- Resolutions: 360p / 720p / 1080p / 4K vs 720p / 1080p for Kling 4.0
- Generation modes: from text / from first and last frames / from references / video editing vs from text / from first and last frames / from references for Kling 4.0
- Input photos: up to 10 vs up to 8 for Kling 4.0
- Prompt limit: 20,000 characters vs 8,000 characters for Kling 4.0
Key differences
Specifications
| Spec | Kling 4.0 | Gemini Omni 1.2 Flash |
|---|---|---|
| Model variants | Reference / Keyframes | Gemini Omni 1.2 Flash |
| Generation modes | from text / from first and last frames / from references | from text / from first and last frames / from references / video editing |
| First frame | Yes | Yes |
| Last frame | Yes | Yes |
| Input photos | up to 8 | up to 10 |
| Input videos | up to 5 | 1, required |
| Input audio files | up to 3 | No |
| Input video length | 2–30 s | No |
| Minimum duration | 3 s | 3 s |
| Maximum duration | 30 s | 15 s |
| Resolutions | 720p / 1080p | 360p / 720p / 1080p / 4K |
| Aspect ratios | 9:16 / 16:9 / 1:1 / auto / 21:9 | 9:16 / 16:9 |
| Prompt limit | 8,000 characters | 20,000 characters |
| Price (different settings) | — coins · 720p | — |
There is no shared resolution for a direct price comparison, so each price includes its setting and is not highlighted as cheaper.
Price at the same settings
What to compare visually
For a fair A/B test, use the same scene and, where both modes allow it, the same first frame. Inspect motion continuity, character and object consistency, physics and contacts, camera behavior, temporal deformation, in-clip cuts and audio synchronization.
What to inspect with Kling 4.0
A clip of up to 30 seconds from text and references or from a chain of keyframes: named characters, voice samples and exact frames.
- Text and references: up to 10 reference photos and 5 videos, up to 7 characters (2–4 photos or one 3–8 second video clip each) and up to 3 voice samples. The Video sound switch applies only to reference videos.
- Keyframes: a first frame, a last frame and up to 8 middle frames. The total number of frames depends on the duration and never exceeds 10.
- The modes do not mix: Keyframes accepts no video, and characters and voices belong only to Text and references mode.
- A hero photo must be at least 300 pixels on the short side; a video character needs at least 700 pixels and one continuous shot.
What to inspect with Gemini Omni 1.2 Flash
Video from text, frames and references, editing and extension.
- Text: the result is created from a written description.
- First and last frame: two photos set how the clip starts and ends.
- The result length is 3 to 15 seconds.
- At most 10 photos as input.
How to run a fair comparison
- Fix the scene, the first frame (if both models accept one), the duration and the resolution.
- Judge motion, not stills: faces, hands and objects should hold across the whole clip and at cuts.
- If sound matters, listen to it separately: dialogue, effects and lip sync differ between models.
- Price a finished clip, not a second: the per-second rate times your real duration, rounded up once.
Sources
Prices, availability and specifications come from the Mixer AI catalog. This is not an independent test: try both models on the same task before choosing.
What we compare
FAQ
Which is cheaper: Kling 4.0 or Gemini Omni 1.2 Flash?
The models use different settings, so a direct price comparison would be misleading: the prices of Kling 4.0 and Gemini Omni 1.2 Flash are in the table, so compare for the mode you need.
How does Kling 4.0 differ from Gemini Omni 1.2 Flash?
Kling 4.0 — maximum duration: 30 s; input videos: up to 5; input audio files: up to 3. Gemini Omni 1.2 Flash — resolutions: 360p / 720p / 1080p / 4K; input photos: up to 10.
How should I compare Kling 4.0 and Gemini Omni 1.2 Flash fairly?
Fix the scene, first frame, duration and resolution. Watch the motion across the whole clip and listen to the sound separately. Price the finished clip, not one second.
Are both models available in Mixer AI?
Yes. Both models are in the Mixer AI video catalog; the launch button on the page opens Canvas on a computer and the Studio on a phone. The page exists only for models in the current catalog.
Which model is better?
There is no single winner. First rule out the model that lacks the duration, first or last frame, sound or resolution you need, then compare clips on your own scene. The table highlights only measurable differences.