| | | The realism is out of this world. | | Look how unbelievably complex this scene is -- all from a video generator. | | And that is no other than the new Gen-4.5 model from Runway. | Their most advanced video generation model to date -- here to close the gap between experimental AI clips and usable cinematic footage. | | The update focuses on improved motion realism, stronger prompt understanding, and more consistent visual quality—making it one of the most practical text-to-video models currently available. | Unlike earlier generations that often struggled with coherence, Gen-4.5 is designed to handle complex camera movement, physical interactions, and multi-step actions within a single prompt. | The result is video that feels more intentional and directed, rather than chaotic or purely aesthetic. | What's improved in Gen-4.5 | More realistic motion and physics | | Gen-4.5 significantly improves how objects, people, and environments move. Hair, fabric, liquids, and body motion behave more believably, and scenes hold together better over time. | Stronger prompt adherence | The model is better at following detailed instructions, including camera moves (push-ins, pans, handheld looks), timing of actions, and scene transitions. This makes it easier to think like a director rather than just describing an image | Style flexibility | Gen-4.5 handles both photorealistic cinematic looks and stylized animation, while maintaining a consistent visual language across shots. | Audio and multi-shot workflows (new) | Recent updates introduce native audio generation and editing, along with multi-shot editing, where changes made early in a sequence can propagate through the video. This opens the door to short narrative scenes, dialogue, and long-form edits without rebuilding everything from scratch. | Practical specs you should know | Input: Text-to-Video (Image-to-Video coming soon) Resolution: 720p, 16:9 Frame rate: 24fps Clip lengths: 5, 8, or 10 seconds Cost: 25 credits per second Access: Standard plan and above
| Because each generation is short, Gen-4.5 works best when you think in shots, not full scenes. | How to prompt effectively | A simple structure works best: | Camera + Subject + Action (in order) + Environment + Style | Example logic: | Camera: "Handheld close-up, slow push-in" Subject: "a cyclist at dawn" Action: "adjusts helmet, exhales, starts riding" Environment: "misty city street, soft morning light" Style: "cinematic realism, shallow depth of field"
| Start simple and add complexity gradually. If something breaks, remove elements until you find what caused it. | Real-world use cases | 1. Marketing & advertising
Create fast 5–10 second product visuals or brand moments. Generate multiple variations to A/B test different lighting, pacing, or camera movement before committing to a final edit. | 2. Film & TV previs
Use Gen-4.5 to explore shot ideas… | | Learn AI in 5 minutes a day | | What's the secret to staying ahead of the curve in the world of AI? Information. Luckily, you can join 1,000,000+ early adopters reading The Rundown AI — the free newsletter that makes you smarter on AI with just a 5-minute read per day. | Sign up to start learning. | Free, private email that puts your privacy first | | Proton Mail's free plan keeps your inbox private and secure—no ads, no data mining. Built by privacy experts, it gives you real protection with no strings attached. | Get free private email |
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