Vivenso Research — AI video models
Four video models, put to two tests.
First, make a clip from a written brief. Second, take a picture that already exists and set it moving as instructed. Both tests were run on an architectural scene, an action scene and a scene from a fictional setting. Every clip is below, side by side, as each model returned it. Press play on any of them.
The short version
What each model did.
| Job | Best in this run | What we saw |
|---|---|---|
| Make a clip from a detailed brief | Gemini Omni Flash, then Veo 3.1 | Omni showed every listed item in all three scenes; Veo missed the side view of the runner |
| Move a given picture as instructed | Seedance 2.0, when it accepts the picture | It made the camera move and the spear thrust it was asked for, and declined one picture of three |
| Knowledge of a fictional setting | Veo 3.1 and Gemini Omni Flash | Both drew the two warriors as described; the other two put a helmet on the bare-headed one |
| Speed | Gemini Omni Flash | Under a minute a clip; Seedance 2.0 took about five |
| Price per clip | Kling 3.0 | The cheapest clip, and the only one returned at 1920 by 1080 |
Whether the movement looks right is not judged here. A table can say what is in a clip. Only watching it says how it moves, and that is what the clips are for.
How far to trust it
One brief, one run, checked by frames.
Each model made each clip once. A second run could come out differently, and with video the spread between runs is wide. The tables were filled in by reading still frames taken from each clip, which shows what appears and roughly when. It does not show pace, weight or smoothness.
The models
Four models from three makers.
| Model | Maker | Clip length | Size returned | Time to make | Price per clip |
|---|---|---|---|---|---|
| Gemini Omni Flash | 10 seconds, fixed | 1280 by 720 | About 46 seconds | $1.03 | |
| Veo 3.1 | 6 seconds | 1280 by 720 | About 1 minute | $2.40 | |
| Kling 3.0 | Kuaishou | 5 seconds | 1920 by 1080 | About 2 minutes | $0.70 |
| Seedance 2.0 | ByteDance | 5 seconds | 1280 by 720 | About 5 minutes | About $1.55 |
Every model received exactly the same words. Each was asked for a wide picture and the shortest clip it offers of five seconds or more; Gemini Omni Flash has no length setting. Every clip came back with sound made by the model, which nobody asked for. The Seedance price is our estimate from its published rate. The clips on this page are the originals, re-encoded at 1280 by 720 so they load quickly.
Test 1
Making a clip from a brief.
Each brief lists things that must appear and how the camera should move. The tables record which of them the frames show.
Test 1 · Architectural
A house on a cliff, approached from the air.
The brief: a slow aerial shot moving toward a two-storey house of concrete and cedar slats, cantilevered over a coastal cliff at dusk, with a reflecting pool on the terrace, waves below, and every line of the building staying straight.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| Two storeys, concrete and timber | Yes | Yes | Yes, the timber as a thin screen | Yes |
| Reflecting pool on the terrace | Yes | Yes | Yes | Yes |
| On a cliff above breaking waves | Yes | Yes | Yes | Yes |
| Camera moves toward the house | Yes | Yes, circling as well | Barely moves | Yes |
Test 1 · Action
A runner, tracked from the side.
The brief: a woman running along a coastal trail at sunrise, the camera beside her at hip height and moving at her speed; navy long-sleeved top, black shorts, a watch on her left wrist; no text and no logos.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| Seen from the side, camera moving with her | Yes | Partly, it swings round to face her | Yes | Yes |
| On a coastal trail | Yes | Yes | No, a road with a guard rail | Yes |
| Navy top and black shorts | Yes | Hard to tell, she is lit from behind | Yes | Yes |
| A watch on her wrist | Yes, and she glances at it | Yes | Cannot be seen | Yes |
| No logos | Yes | Yes | Yes | No, marks on the top and the shorts |
Test 1 · A fictional setting
A duel from a world the models were not built for.
The brief named two kinds of warrior from the Warhammer 40,000 setting: a gold-armoured guardian, bare-headed, with a spear, and a red-armoured warrior in a horned helmet with a motorised axe. The spear was to parry the axe in a burst of sparks, at real speed. None of the four refused.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| Gold guardian, bare-headed, with a cloak | Yes | Yes | No, he wears a helmet | No, he wears a helmet |
| Red warrior in a horned helmet, with an axe | Yes | Yes | Yes | Yes |
| Spear meets axe in a burst of sparks | Yes | Yes, a large burst | No sparks in the frames | Yes |
| A live-action look | Yes | Yes | Closer to a game cinematic | Closer to animation |
| Shots in the clip | Several, with cuts | One | One | Two |
On this set
The clips of this setting, here and in the second test, are unofficial test clips made by AI models. Warhammer 40,000 is a trademark of Games Workshop Limited. Vivenso Labs is not affiliated with Games Workshop, and nothing here is endorsed by it.
Test 2
Setting a given picture in motion.
Every model was handed the same starting picture and the same instruction. A good result does what the instruction says and keeps the picture's subject as it was. The starting picture is shown first in each set.
Test 2 · Architectural
Rise, and move in over the pool.
The instruction: the camera rises slowly and moves forward over the pool toward the house, while the water ripples and the waves move. The house itself must not change.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| Camera rises and moves toward the house | Barely moves | Yes | Barely moves | Yes |
| The house stays the same | Yes | Yes | Yes | Yes |
Test 2 · Action
Keep her running.
The instruction: she keeps running at the same fast pace with the camera tracking beside her, and her face, hair, clothes, shoes and watch stay the same.
Seedance 2.0 declined this starting picture, saying it may show a real person. It does not: the picture was made by an AI model. No clip was made.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| She keeps running | Yes | Yes | Yes | Declined the picture |
| Camera stays beside her | Yes | Drifts round toward her front | Yes, pulling back | No clip |
| Same person and clothes throughout | Yes | Yes | Yes | No clip |
Test 2 · A fictional setting
One fast thrust, then back to guard.
The instruction: he drives the spear forward in one fast, precise thrust at full speed, then snaps back to his guard, with no slow motion, and his face and armour stay the same.
| Asked for | Gemini Omni Flash | Veo 3.1 | Kling 3.0 | Seedance 2.0 |
|---|---|---|---|---|
| One thrust, then back to guard | Yes, after holding still for over a second; then he stands for the rest | No. He lifts the spear overhead and turns away | A thrust, then a spin that was not asked for | Yes, at once |
| Same face and armour | Yes | Yes | Yes | Yes |
Three of the four held the starting pose for more than a second before anything moved. Whether any of these thrusts is fast and precise enough is a question for the eye, not for a table.
Method
How the test was run.
- The same words for everyone. Nothing was tuned for any one model, and nothing was re-run to get a better clip. There are twenty-three clips: twenty-four were asked for and one was declined.
- Starting pictures. The house and the guardian are the source pictures of the image study, cropped to the wide shape. The runner was made new in that shape by a model from a maker not under test.
- What was declined. Seedance 2.0 declined the runner's starting picture as a possible likeness of a real person. The instruction was not reworded to get round that. It accepted the guardian's picture, which also shows a realistic face.
- One interruption. The two Google models stopped part-way through on a spending-rate limit on our account. That is not a refusal. Their four remaining clips were made twenty minutes later with the same words.