Runway Gen-4 & Gen-4.5 AI Video Generator
Ranked #1 on Video Arena. Runway Gen-4.5 delivers 4K cinematic output with enhanced physics and motion. Motion brush, inpainting, I2V first frame, and Adobe Firefly integration.
Video Generator
No Videos Generated
Why Runway Gen-4.5 Leads the Video Arena
Runway Gen-4.5 holds the #1 spot on the Video Arena leaderboard with 1,247 Elo, surpassing all competitors.
#1 Video Arena Ranking
Gen-4.5 tops the Artificial Analysis benchmark at 1,247 Elo — surpassing Sora 2, Veo 3, and all other models in quality.
Native 4K Cinematic Output
Gen-4.5 produces cinematic, highly realistic 4K video with improved physics, motion, and visual consistency.
Motion Brush & Inpainting
Paint motion paths directly onto your scene. Remove or replace objects in existing footage with AI precision.
I2V First Frame
Supply a first-frame image alongside your text prompt for precise visual control over the generated video.
Adobe Firefly Integration
Gen-4.5 is available inside Adobe Firefly, bringing AI video directly into professional creative workflows.
Multi-Modal Input
Start from text, images, or existing video. Combine input modes for maximum creative flexibility.
How to Use Runway Gen-4
Create professionally controlled AI videos with Runway Gen-4 in three steps.
Set Your Input
Enter a text prompt, upload a reference image, or import existing footage as your starting point.
Apply Creative Controls
Use motion brush to paint movement paths. Set camera motion, style, and region-specific editing parameters.
Generate & Refine
Generate your video and use inpainting to fix any areas. Extend the clip or regenerate sections as needed.
Frequently Asked Questions
Everything about Runway Gen-4.
Runway Gen-4 Guides & Comparisons
Tutorials and comparisons for Runway Gen-4 AI video.
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Try the #1 Ranked AI Video Generator
Runway Gen-4.5 leads the Video Arena with 4K cinematic output, motion brush, inpainting, and Adobe Firefly integration.