Product on a turntable
A rigid object turning half a rotation: the shape must not morph, the light must not move, the background must stay plain.
2 models received different prompt text — show each
Each model is given the prompt its input contract calls for: a multi-reference model is told which reference is which character, a segmented model gets shot segments. The frame, the references and the requested length are identical throughout. This is the honest version of "the same prompt".
H3 Max, H3 ref2v, Wan 2.7, Seedance 2.0, LTX-2
The pedestal rotates slowly through a half turn clockwise, showing the headphones from the side and then from behind, and stops. The headphones keep their exact shape and proportions, the lighting stays fixed, the background stays plain. No people, no text. Quiet studio room tone.
Kling v3 Pro
[{"prompt":"The pedestal rotates slowly through a half turn clockwise, showing the headphones from the side and then from behind, and stops. The headphones keep their exact shape and proportions, the lighting stays fixed, the background stays plain. No people, no text. Quiet studio room tone.","duration":"5"}]| H3 Max | H3 ref2v | Kling v3 Pro | Wan 2.7 | Seedance 2.0 | LTX-2 | |
|---|---|---|---|---|---|---|
| Lines heard | — | — | — | — | — | — |
| Voice | model's own | model's own | model's own | model's own | model's own | model's own |
| Motion | 0.86 | 0.82 | 0.92 | 1.07 | 0.82 | 0.82 |
| Scene changes | 0 | 0 | 0 | 0 | 0 | 0 |
| Loudness / peak | -43.1 / -31.7 | -68.8 / -57.3 | -26 / -11.6 | -70 / -60.3 | -70 / -89.3 | -70 / -65.8 |
| Length | 5.18s | 5.18s | 5.04s | 5.04s | 5.06s | 4.92s |
| Frame | 768×1344 | 768×1344 | 1072×1928 | 720×1280 | 720×1280 | 576×1024 |
| Wait | 6s | 2:45 | 3:05 | 2:21 | 3:56 | 51s |
| Attempts | 1 | 1 | 1 | 1 | 1 | 1 |
| Cost | $0.40 | $0.30 | $0.98 | $0.50 | $0.90 | $0.22 |
The read
Read the takes, not the motion number. All six models rotated the headphones through roughly a half turn as asked, on a fixed light and a plain ground; the motion check flags five of them as near-static because a small object on an unchanging frame barely moves a whole-frame mean. That is a limit of the check, and this input is now the example of it. H3 reference-to-video, Kling and Seedance were the cleanest rotations; H3 Max overshot the half turn and came back; LTX thinned the headband for a few frames mid-turn; Wan opened on a warped pair that settled into shape by the second second. For product work the difference between these is small and the price is not.
One person's judgment from the takes above, 2026-09-03. The table is the evidence; this is the opinion.
what whisper heard
- H3 Max: [BLANK_AUDIO]
- H3 ref2v: [BLANK_AUDIO]
- Kling v3 Pro: (thunder rumbling)
- Wan 2.7: [BLANK_AUDIO]
- Seedance 2.0: [BLANK_AUDIO]
- LTX-2: [BLANK_AUDIO]