Milk pouring into black coffee, macro: which AI does it best?
Runway Gen-4.5 wins with 8.3/10. Behind it: Kling 3.0 (8.0), PixVerse V6 (8.0), Veo 3.1 Fast (6.5). One 4-second clip per model, unedited, with whatever audio the model made.
A hand pouring milk into black coffee, the swirl in macro, top-down.| # | Model | Overall | adherence | motion | quality | artifacts | Cost | Render |
|---|---|---|---|---|---|---|---|---|
| 1 | Runway Gen-4.5 | 8.3 | 8 | 8 | 9 | 8 | $0.48 | 68s |
| 2 | Kling 3.0 | 8.0 | 8 | 8 | 8 | 8 | $0.52 | 130s |
| 3 | PixVerse V6 | 8.0 | 8 | 8 | 8 | 8 | $0.21 | 46s |
| 4 | Veo 3.1 Fast | 6.5 | 7 | 6 | 7 | 6 | $0.60 | 68s |
Best per category: adherence Runway & Kling & PixVerse (8) · motion Runway & Kling & PixVerse (8) · quality Runway (9) · artifacts Runway & Kling & PixVerse (8)
Every output, ranked
#1 Runway Gen-4.5
adherence 8motion 8quality 9artifacts 8
Beautiful swirl in a mug; angled rather than top-down.
#2 Kling 3.0
adherence 8motion 8quality 8artifacts 8
Near top-down glass, clean realistic swirl.
#3 PixVerse V6
adherence 8motion 8quality 8artifacts 8
Realistic milk swirl in black coffee, near top-down; pitcher partly in frame.
#4 Veo 3.1 Fast
adherence 7motion 6quality 7artifacts 6
Milk forms unrealistic blobs.
FAQ
Which AI is best for "AI video of liquid pouring"?
In our October 2026 test of this exact prompt, Runway Gen-4.5 wins with 8.3/10, ahead of Kling 3.0 (8.0), PixVerse V6 (8.0), Veo 3.1 Fast (6.5). Runway Gen-4.5's output: Beautiful swirl in a mug; angled rather than top-down.
What exact prompt was used?
“A hand pouring milk into black coffee, the swirl in macro, top-down.” Every model got the same prompt with default settings, 4 seconds at 720p, and one best-effort retry only if a generation failed.
How were the outputs scored?
Each output was scored without knowing which model made it, from 1 to 10 on adherence, motion, quality, artifacts. The overall score is the average of those.
Keep exploring
Runway Gen-4.5 vs Kling 3.0 head-to-head · AI video physics test · Best for food · All 20 prompts on one page · October rankings
More video tests: Woman laughing at a rainy café window · Dog catching a frisbee in slow motion · Chef with a flaming wok · Drone shot over a neon cyberpunk city · Two people talking on a park bench (lip-sync) · Skateboard kickflip down stairs · Origami crane unfolding and flying away · Vertical sneaker product spin (9:16) · Knight and dragon reveal · Concert crowd with confetti
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