In 18 months, AI video has covered what AI photography took four years to do. Three players now lead the pack: Sora (OpenAI), Runway (Gen-4) and Kling (Kuaishou). Each has its own signature and blind spots. We put them through 12 identical prompts to answer the only question that matters: which to choose, and for what.
How the test was conducted
12 representative prompts were generated on each platform with the same parameters (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, 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 reference for physical fidelity: reflections, shadows, organic movement. On landscapes and complex scenes (crowd, water, changing light), the rendering is a notch above.
Weakness: creative control. No motion brush, no precise keyframes, no as-flexible image upload as Runway. It’s an excellent tool for isolated shots, harder to integrate 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’s a small Final Cut + AI.
Raw quality lags Sora on complex scenes, but integration into a real workflow is far superior. For anyone who iterates, edits and refines, it’s the most practical tool.
Kling – the very serious outsider
8 / 10 Visual quality 9 / 10 Human movement 7 / 10 Creative controlKling impresses with faces, bodies, dances. Where Sora makes beautiful abstract scenes, Kling makes credible choreography. It’s the only one offering 2 minutes in queue – useful for narrative use cases.
Main friction in France: interface partly in Chinese depending on version, and random generation times at peak hours. The quality/price ratio remains unbeatable.
Newsletter
Receive AI insights, once a month
Analyses like this one, no hype, no spam.
12 prompts, 3 tools
| Test case | Winner |
|---|---|
| Cosmetic product shot on marble background | Sora |
| Skater in street, slow-motion | Kling |
| Drone over mountain landscape | Sora |
| Character dancing in a box | Kling |
| 3D motion-design logo | Runway |
| Car crossing a bridge | Sora |
| Interview lip-sync | Runway |
| Illustrated 2D animation | Runway |
| Stadium crowd, wide shot | Sora |
| Dish cooking zoom dolly-in | Runway |
| Martial arts fight | Kling |
| Urban B-roll for vlog | Tie Runway / Kling |
Overall score: Sora 5 wins, Runway 4 wins (+ 1 tie), Kling 3 wins (+ 1 tie).
Which to choose based on your use case?
🎬Cinema & premium ads
Our choice: Sora
When every shot counts and external post-prod is a given.
📱Social, ads, quick content
Our choice: Runway
Complete workflow + tools = real velocity.
👤Characters, dance, narration
Our choice: Kling
Credible human movement, long durations available.
🧪Creative mix
Our choice: Stack
Many teams use all three – Runway for iteration, Sora for hero shots, Kling for humans.
“I no longer have one AI video tool. I have three tools, and I’ve learned to recognize which shot goes on which model.”
Frequently asked questions
Which to choose if I’m starting out? +
Runway. The interface is most accessible, free credit enough to test, and the ancillary tools (image-to-video, motion brush, lip-sync) cover most cases without technical barriers.
Is Sora really better than the others? +
On physical coherence in complex scenes and render quality, yes – it’s the most visible quality gap. However, creative control (camera, transitions, retouching) remains more limited than Runway.
Is Kling worth it? +
Yes, especially for human faces, dances and character movement. The quality/price ratio is unbeatable. The barrier remains interface translation and generation time.
What’s the maximum duration per generation? +
Sora: up to 60s in pro mode. Runway: 16-20s standard, extensible. Kling: 10s default, 2 minutes in extended mode (in queue). Adjust to your use.
Are there restrictions on real faces? +
Yes, on all three. Sora strongly limits public figures. Runway allows uploading your own reference (under usage conditions). Kling requires enhanced verification for human content.
Also read
⚠️ Transparency: some links may be affiliated. No impact on our evaluations or prices.