Step 1
Open Krea Video
Pick Runway Gen-4.5 or Gen-4 from the model selector in the Krea Video Tool.
Generate
AI Image Generation
AI Video Generation
AI 3D Generation
Edit
AI Image Enhancements
AI Video Enhancements
Customize
AI Finetuning
File Management
Krea 2
"People running, risograph poster"
Generate
AI Image Generation
AI Video Generation
AI 3D Generation
Edit
AI Image Enhancements
AI Video Enhancements
Customize
AI Finetuning
File Management
Runway Gen-4.5 AI Video Generator
Generate AI videos with Runway Gen-4.5 on Krea — native text to video, image to video, consistent characters from one reference image, and realistic motion for ads, social clips, and film prototypes. Gen-4 is available in the same tool.
Examples
How It Works
How to Generate Videos with Runway on Krea
From first prompt to production-ready video in four steps.
2Step 2
Set your start frame
Upload a photo or generate a reference image with Krea 1 — this frame locks your subject and composition.
A man painting in his garage, muted tones, high quality shot.
Step 3
Describe the motion
Write a short prompt about how things should move. Focus on motion, not visual details.
Step 4
Generate and refine
Compare takes, then enhance and upscale the best one — all inside Krea.
Runway Gen-4.5 Technical Specifications
Gen-4.5
Runway’s latest frontier model with native text-to-video — live on Krea
2–10s
Clip lengths on Gen-4.5 — Gen-4 generates 5 or 10 second clips
24 fps
Smooth, film-style motion output
One image
Characters stay consistent from a single reference across shots, lighting, and locations
T2V + I2V
Native text-to-video on Gen-4.5, plus start-frame animation across the family
16:9 + 9:16
Widescreen and vertical output for every placement
≈1 min
Typical Gen-4 generation time on Krea — Gen-4.5 takes around five minutes
What Runway Gen-4.5 Can Do
01 Character lock
Consistent Characters Across Every Shot
Upload one reference image and your character keeps the same face, clothing, and colors in any lighting, location, or style. Build narrative content and short films without re-casting your subject every generation.
Generate with Gen-4.502 Image to video
Image to Video: Animate Any Start Frame
Turn stills into motion — product shots, illustrations, or frames generated with Krea’s image models. Runway simulates real-world physics, so subjects move naturally instead of drifting or morphing.
Animate a Start Frame03 Text to video
Text to Video for Ads and Social Clips
Gen-4.5 generates video straight from a text prompt — no start frame required. Draft product videos, concept tests, and social clips in widescreen 16:9 or vertical 9:16 for TikTok, Reels, and YouTube.
Generate Video from TextPrompt Examples
Runway Prompt Examples: Motion-First Prompting
Runway responds best to short prompts that describe movement instead of appearance — your reference image already shows what things look like. Every clip below is paired with the exact prompt that generated it.
Garage Painter in Muted Tones
Garage Painter in Muted Tones
A man painting in his garage, muted tones, high quality shot.
Try this promptNeon Street Market Tracking Shot
Prompt
A fluid tracking shot following a lone figure walking through a rain-soaked dystopian street market at night, shot on Steadicam. The environment is be dense with neon lights (pinks, blues, purples), steam rising from grates, and hanging lanterns. The subject should be slightly underexposed, mysterious, with only rim lighting defining their silhouette.
Try this promptNeon Street Market Tracking Shot
A fluid tracking shot following a lone figure walking through a rain-soaked dystopian street market at night, shot on Steadicam. The environment is be dense with neon lights (pinks, blues, purples), steam rising from grates, and hanging lanterns. The subject should be slightly underexposed, mysterious, with only rim lighting defining their silhouette.
Try this promptDocumentary Portrait at Sunset
Prompt
Documentary, naturalistic shot. An old grizzled mechanic, somewhat overweight, wearing a plaid shirt, sits outside a garage at sunset, the warm light illuminating his face and beard. He's lost in contemplation. In the background we see sparks from welding. Slice of Americana documentary, New Mexico. Shallow depth of field, hard shadows.
Try this promptDocumentary Portrait at Sunset
Documentary, naturalistic shot. An old grizzled mechanic, somewhat overweight, wearing a plaid shirt, sits outside a garage at sunset, the warm light illuminating his face and beard. He's lost in contemplation. In the background we see sparks from welding. Slice of Americana documentary, New Mexico. Shallow depth of field, hard shadows.
Try this promptCinematic Car Reveal
Prompt
Luxury Automobile - Cinematic Reveal - A sleek, black sports sedan emerges from darkness. Pull back slowly with a crane or jib to reveal the vehicle's sculptural curves. The car sits on a wet, reflective black surface in a minimal studio environment, lit with a single large soft box from above and slightly behind, creating elegant highlights along the body lines and hood. Position rim lights (hard sources with blue gels) on both sides to define the silhouette against the dark background. Grade with deep, crushed blacks and pristine highlights, emphasizing the premium craftsmanship. The shot should feel aspirational, powerful, and meticulously crafted.
Try this promptCinematic Car Reveal
Luxury Automobile - Cinematic Reveal - A sleek, black sports sedan emerges from darkness. Pull back slowly with a crane or jib to reveal the vehicle's sculptural curves. The car sits on a wet, reflective black surface in a minimal studio environment, lit with a single large soft box from above and slightly behind, creating elegant highlights along the body lines and hood. Position rim lights (hard sources with blue gels) on both sides to define the silhouette against the dark background. Grade with deep, crushed blacks and pristine highlights, emphasizing the premium craftsmanship. The shot should feel aspirational, powerful, and meticulously crafted.
Try this promptStorm Time-Lapse
Prompt
A dramatic time-lapse showing storm clouds rolling in over an open landscape or cityscape, captured over 2-4 hours compressed into 10-15 seconds. Highly sped-up footage. Set up a locked-off camera on a sturdy tripod in a location with an interesting foreground element (lone tree, building, or monument) and expansive sky. Shoot one frame every 3-5 seconds depending on cloud speed, maintaining consistent exposure despite changing light conditions. Frame with roughly two-thirds sky to emphasize the meteorological drama. Capture the progression from clear or partly cloudy to ominous storm clouds, including the dramatic shift in lighting as the sun is obscured.
Try this promptStorm Time-Lapse
A dramatic time-lapse showing storm clouds rolling in over an open landscape or cityscape, captured over 2-4 hours compressed into 10-15 seconds. Highly sped-up footage. Set up a locked-off camera on a sturdy tripod in a location with an interesting foreground element (lone tree, building, or monument) and expansive sky. Shoot one frame every 3-5 seconds depending on cloud speed, maintaining consistent exposure despite changing light conditions. Frame with roughly two-thirds sky to emphasize the meteorological drama. Capture the progression from clear or partly cloudy to ominous storm clouds, including the dramatic shift in lighting as the sun is obscured.
Try this prompt3D Character Animation
Prompt
3D render animation, a cute duckling character does a dance routine on a lilypad, in the style of modern 3D children's animated movies.
Try this prompt3D Character Animation
3D render animation, a cute duckling character does a dance routine on a lilypad, in the style of modern 3D children's animated movies.
Try this promptRunway Prompt Gallery
Copy the exact prompts behind these Runway clips and start generating your own AI videos.
Why creators choose Krea for Runway Gen-4.5
Trusted by over 30 million creators worldwide.
Real reviews on TrustpilotThe platform that just works
So many AI tools out there but I always come back to Krea. It's really the one AI platform that 'just works'.
FYN
Verified review
Best interfaces in the industry
Krea's interfaces are still the best in the industry. Everything looks and feels so clean and easy to use! Imo the easiest to use gen AI website.
Lynn
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Fast, simple, always up to date
Ultra fast generations. Extremely simple to use. All the latest AI models.
Daniel
Verified review
The only AI subscription I need
KREA is the only AI subscription I have right now besides ChatGPT.
Sophia M.
Verified review
New models the same day
I'm a Krea Max user. It's crazy how fast they add models. I see a new AI model on twitter and the same day krea already offers it.
Wirot Ch.
Verified review
The most powerful creative suite
Still the most powerful AI creative suite out there.
Gravion
Verified review
Plans & Pricing
Free
Get free daily credits to try basic features.
$0 /month
100 compute units / day
No credit card required
Full access to real-time models
Limited access to image, video, 3D, and lipsync models
Limited access to image upscaling
Limited access to LoRA training
Basic
Access our most popular features
$9/month
5,000 compute units / month
Everything in Free plus:
Commercial license
Full access to Image, 3D, and Lipsync models
LoRA fine-tuning with up to 50 images
Image upscaling up to 22K
Access to selected video models
Pro
Advanced features and discounts on compute units
$35/month
20,000 compute units / month
Everything in Basic plus:
Access to all video models
Workflow automation with Nodes and Apps
AI-powered Nodes Agent
Bulk discounts on compute unit packs
Max
Full access with higher discounts on compute units
$105/month
60,000 compute units / month
Everything in Pro plus:
Unlimited Lora fine-tunings with 2,000 files
Expanded concurrency and queueing
Unlimited relaxed generations
Bulk discounts on compute unit packs
For Teams and Enterprises
Workplace management, collaboration, and enterprise customizations
Business
Secure and collaborative workspace for growing teams
$200/month
80,000 compute units / month
Everything in Max plus:
Up to 50 seats included
Share private Node Apps with your team
Train LoRAs with up to 20,000 images
Unlimited relaxed generations
Custom user roles and permissions
Fine-grained controls for model access
Enterprise
Enterprise-grade security with dedicated support and admin features
Custom
Everything in Business plus:
Access to Krea 2
Custom Terms of Service
Priority support with SLA
Per-member spend limits
Slack connect
Custom compute packages
Unlimited relaxed generations
Audit logs
Frequently Asked Questions
Runway Gen-4.5 is Runway’s latest frontier AI video model and the default Runway model on Krea. Its headline capability is native text-to-video — generate a clip from a prompt alone, with no start image — plus flexible clip lengths from 2 to 10 seconds, consistent characters, and realistic motion.
Gen-4 is the previous Runway generation, known for character consistency: upload one reference image and your character looks the same across different shots, lighting, and locations. Gen-4.5 builds on it with native text-to-video and more flexible clip lengths, while Gen-4 remains available on Krea for fast, image-driven generations.
Krea’s free plan includes daily compute units you can spend on any model, including Runway. For more generations, higher limits, and commercial licensing, upgrade to a paid plan.
On Krea, Runway Gen-4 generates 5 or 10 second clips, and Gen-4.5 supports any length from 2 to 10 seconds. You can choose widescreen 16:9 or vertical 9:16 formats.
Gen-4 clips typically generate in about a minute on Krea. Gen-4.5, the higher-quality frontier model, takes around five minutes per clip.
Keep prompts simple and motion-first. Start with basic movement, then add details one at a time. Describe how things move rather than what they look like — your start image already covers appearance. Avoid conversational language and negative prompts.
Use any image as your starting frame. Generate one with Krea 1 or another model in the Krea Image Tool, then switch to Runway in the Video Tool — or upload your own photos and illustrations.
Yes. Runway Gen-3, the previous-generation cinematic model, is still available on Krea in the Runway Gen-3 video tool. Gen-4 and Gen-4.5 supersede it for character consistency and prompt adherence.
Yes. On Krea paid plans, generated videos include commercial licensing for campaigns, products, client work, and other production projects.
Runway keeps characters consistent within one clip, but it can’t maintain the same character across multiple separate clips — each generation is one scene. Avoid prompts that ask for multiple scene changes or style shifts in a single clip.
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Runway Gen-4.5 by Runway
Generate AI videos with Runway Gen-4.5 on Krea. Create clips straight from a text prompt with native text-to-video, keep characters consistent from a single reference image, and ship widescreen or vertical formats — with Gen-4 also available in the same tool.
Try Runway on KreaMore from Runway
Explore other Runway models available on Krea
Explore Other Models
Discover more AI models for images and videos on Krea
Or try every model side by side in Krea's free AI video generator and AI image generator.
Gen-4.5 and Gen-4 by Runway
The Gen video model family is developed by Runway. For official model announcements and research, visit the provider’s site.
Visit the official Runway sitePage last updated