Entering prohibited content may cause generation to fail
Runway Gen-4.5 is the world's top-rated video model, offering unprecedented visual fidelity and creative control. It produces cinematic and highly realistic outputs while providing limitless creative freedom and precise control over every aspect of generation.
Intricate, multi-element scenes rendered with precision.
Precise placement and fluid motion for both objects and characters.
Realistic physics with believable collisions and natural movement.
Nuanced emotions, natural gestures and lifelike facial detail.

Go to the KaraVideo workspace and choose Runway from the model list.



Describe the scene in text or upload a reference image to start.



Click Generate, wait a few moments, You can edit or share it directly within KaraVideo.
Despite the leap in capabilities, the model exhibits several limitations common to video generation models:
effects sometimes precede causes (e.g., a door opening before the handle is pressed).
objects may disappear or appear unexpectedly across frames (e.g., a cup vanishing after being occluded).
actions disproportionately succeed (e.g., a poorly aimed kick still scoring a goal).
Experience the full power of Runway Gen-4.5 directly inside KaraVideo. Turn your ideas into cinematic AI videos with unprecedented visual fidelity and precise prompt adherence.