In 18 months, AI video has covered the ground AI photography took four years to cross. Three players now lead the field: Sora (OpenAI), Runway (Gen-4) and Kling (Kuaishou). Each has its signature and its blind spots. We ran all three through 12 identical prompts to answer the only question that matters: which one to choose, and for what.
How the test was run
12 representative prompts were generated on each platform with the same settings (5 seconds, 16:9 ratio, maximum quality). Categories: product, urban scene, landscape, character animation, action scene, micro-cinematic, motion design.
Each generation is scored on 5 criteria: prompt fidelity, physical coherence, visual quality, camera control, and usability (editing, retouching). Three people score independently to reduce bias.
Sora — raw quality
9 / 10 Visual quality 9 / 10 Physical coherence 6 / 10 Creative controlSora remains the benchmark for physical fidelity : reflections, shadows, organic movement. On landscapes and complex scenes (crowds, water, shifting light), the result is a notch above.
Weakness: creative control. No motion brush, no precise keyframes, no reference upload as flexible as Runway’s. It is an excellent tool for isolated shots, harder to slot into an editing workflow.
Runway Gen-4 — the Swiss army knife
8 / 10 Visual quality 7 / 10 Physical coherence 9 / 10 Creative controlRunway wins on creative control : motion brush, image-to-video, camera control, lip-sync, extension tools, video in-painting. It is a small Final Cut plus AI.
Raw quality falls short of Sora on complex scenes, but integration into a real workflow is far better. For anyone who iterates, edits and refines, it is the most practical tool.
Kling — the very serious outsider
8 / 10 Visual quality 9 / 10 Human movement 7 / 10 Creative controlKling impresses on faces, bodies and dance. Where Sora produces very beautiful abstract scenes, Kling produces credible choreography. It is the only one to offer a 2-minute option in the queue — useful for narrative use cases.
Main drawback in France: an interface partly in Chinese depending on the version, and unpredictable generation times at peak hours. The value for money remains unbeatable.
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12 prompts, 3 tools
| Case tested | Winner |
|---|---|
| Cosmetic product shot on marble | Sora |
| Skateboarder in the street, slow motion | Kling |
| Drone over a mountain landscape | Sora |
| Character dancing in a club | Kling |
| 3D motion-design logo | Runway |
| Car crossing a bridge | Sora |
| Lip-sync interview | Runway |
| Illustrated 2D animation | Runway |
| Stadium crowd, wide shot | Sora |
| Dish with a dolly-in zoom | Runway |
| Martial arts fight | Kling |
| Urban b-roll for a vlog | Tie between Runway and Kling |
Overall score: Sora 5 wins, Runway 4 wins (+ 1 shared), Kling 3 wins (+ 1 shared).
Which one to choose for your use case
🎬Film and premium ads
Our pick: Sora
When every shot counts and external post-production is a given.
📱Social, ads, fast content
Our pick: Runway
A complete workflow plus side tools means real velocity.
👤Characters, dance, storytelling
Our pick: Kling
Credible human movement, longer durations available.
🧪Creative mix
Our pick: a stack
Many teams use all three — Runway to iterate, Sora for hero shots, Kling for humans.
“I no longer have one AI video tool. I have three, and I have learned to recognise which shot goes to which model.”
Frequently asked questions
Which one should I choose as a beginner? +
Runway. The interface is the most accessible, the free credit is enough to test, and the side tools (image-to-video, motion brush, lip-sync) cover the most cases with no technical barrier.
Is Sora really better than the others? +
On the physical coherence of complex scenes and on rendering quality, yes — it is the most visible quality gap. Creative control (camera, transitions, retouching), on the other hand, remains more limited than Runway’s.
Is Kling worth a look? +
Yes, especially for human faces, dance and character movement. The value for money is unbeatable. The barriers are the interface translation and the generation delay.
What is the maximum duration per generation? +
Sora: up to 60 s in pro mode. Runway: 16-20 s as standard, extendable. Kling: 10 s by default, 2 minutes in extended mode (queued). Adapt to your use case.
Are there restrictions on real faces? +
Yes, on all three. Sora heavily restricts public figures. Runway allows you to upload your own reference (subject to usage conditions). Kling requires enhanced verification for human content.
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