Kling 4.0 — price, 1 s · 1080p: ≈ 18.22 coins · Reference; maximum duration: 30 s. HappyHorse 1.1 — input photos: up to 9.
Updated
| Spec | Kling 4.0 | HappyHorse 1.1 |
|---|---|---|
| Model variants | Reference / Keyframes | HappyHorse 1.1 |
| Generation modes | from text / from first and last frames / from references | from text / from first frame / from references |
| First frame | Yes | Yes |
| Last frame | Yes | No |
| Input photos | up to 8 | up to 9 |
| Input videos | up to 5 | No |
| Input audio files | up to 3 | No |
| Input video length | 2–30 s | No |
| Output audio | — | Native |
| Minimum duration | 3 s | 3 s |
| Maximum duration | 30 s | 15 s |
| Resolutions | 720p / 1080p | 720p / 1080p |
| Aspect ratios | 9:16 / 16:9 / 1:1 / auto / 21:9 | 9:16 / 16:9 / 1:1 / 4:3 / 3:4 / 4:5 / 5:4 / 9:21 / 21:9 |
| Prompt limit | 8,000 characters | 5,000 characters |
| Price, 1 s · 1080p | ≈ 18.22 coins · Reference | ≈ 29.63 coins |
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.
A clip of up to 30 seconds from text and references or from a chain of keyframes: named characters, voice samples and exact frames.
A short scene with sound, from text, a starting image or a set of photos.
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.
Price, 1 s · 1080p: Kling 4.0 ≈ 18.22 coins · Reference, HappyHorse 1.1 ≈ 29.63 coins. Kling 4.0 is cheaper. The total depends on your settings: the price of the chosen options is shown in the interface before you run.
Kling 4.0 — price, 1 s · 1080p: ≈ 18.22 coins · Reference; maximum duration: 30 s; last frame: Yes. HappyHorse 1.1 — input photos: up to 9.
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.
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.
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.
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