Runway Gen-4.5
Video modelCard summarizedRunway's state-of-the-art text to video and image to video model
● Re-checked 12 Oct 2026 · 57 facts · 0 corrections · 1 unconfirmedSource: Introducing Runway Gen-4.5 (launch post; no model card published)
Where to call it
- Runway API
gen4.5
Good for
- Realistic physics: object weight, momentum, liquids, fine detail such as hair and material texture
- Complex multi-element scenes with precise object placement
- Characters with nuanced emotion, gestures and facial detail
Watch out for
Overview
Runway · 01Gen, front
Gen-4.5
Runway's state-of-the-art text to video and image to video model
Typical price
$0.12 / sec
Text- or image-to-video, MP4
- Max resolution
- 1584×672 / 1280×720
- Max length
- 10 s
- Modes
- text-to-video, image-to-video (first frame)
- Released
- 1 Dec 2025
Runway's launch post presents Gen-4.5 as its state-of-the-art video model, with gains in motion quality, prompt adherence and visual fidelity. Runway says it held the top spot on the Artificial Analysis Text-to-Video leaderboard at release (1,247 Elo, 30 Nov 2025) and keeps Gen-4's speed and efficiency. No system or model card has been published. launch post
gen4.5- Typical price
- $0.12 / sec
- Max resolution
- 1584×672 / 1280×720
- Max length
- 10 s
- Aspect ratios
- 16:9, 9:16, 4:3, 1:1, 3:4, 21:9
- Weights
- Closed
- Released
- 1 Dec 2025
- text-to-video
- image-to-video (first frame)