Run Runway Gen-4.5 Online and Pay Only For What You Generate
Runway's premier production video engine. Industry standard for high-end movie pre-production and cinematic concepts. Run Runway Gen-4.5 in your browser with no install and no waitlist — 720p, clips to 10 seconds, from 72 credits a generation.
Runway Gen-4.5 Specifications
Pulled directly from the generation engine, so what you read here is what the model actually does.
What Runway Gen-4.5 Does Well
Renders up to 720p
Clips up to 10 seconds per generation
Available as text to video and image to video
Cinematic camera-motion presets apply on top of any prompt
Exact credit cost shown before you generate — failed runs refund automatically
Who Builds Runway Gen-4.5
Runway is the studio-facing lab, used in real film and advertising post-production pipelines. Gen-4.5 sits at or near the top of independent video benchmarks and is not carried by most consumer platforms.
Best suited to
As the premium tier, Runway Gen-4.5 is a strong pick for hero shots, client work and anything that will be graded, cut into a longer edit, or shown on a large screen.
Runway Gen-4.5 Pricing
Credits for a 5-second generation. The exact cost appears on the Generate button before you spend anything, and a failed generation refunds automatically.
Unused credits expire at plan renewal/expiration. No throttled "unlimited" tier.
Camera Moves That Work With Runway Gen-4.5
One-click cinematic presets. Pick a move, add your image, and generate — no camera vocabulary required.
Clear credit pricing
Every generation has a transparent upfront cost. Unused credits expire at plan renewal.
Failed runs refund instantly
If a generation fails, the credits return to your balance automatically — no support ticket.
Price shown up front
The exact credit cost is printed on the Generate button before you commit to anything.
Runway Gen-4.5 — Frequently Asked Questions
How much does Runway Gen-4.5 cost?
A 5-second Runway Gen-4.5 generation costs 72 credits. The exact figure is shown on the Generate button before you spend anything, and a failed run refunds automatically.
How long can a Runway Gen-4.5 video be?
Runway Gen-4.5 handles up to 10 seconds in a single pass — selectable lengths are 5s and 10s. For longer pieces, generate several shots and cut them together in the editor.
Does Runway Gen-4.5 generate sound?
No. Runway Gen-4.5 outputs silent video. Add narration or music afterwards with the text-to-speech tool, or pick a model with native audio such as Veo 3.1, Kling 3.0 or Seedance 2.0.
Can I animate my own image with Runway Gen-4.5?
Yes. Upload a still and Runway Gen-4.5 animates it. Image-to-video generally gives you far more control over composition than describing the same scene in words.
What resolution does Runway Gen-4.5 output?
720p. Anything you generate can be pushed to 4K afterwards with the video upscaler.
Can Runway Gen-4.5 make vertical video for TikTok and Reels?
Yes — Runway Gen-4.5 supports 16:9, 9:16, 4:3, 3:4, 1:1 and 21:9, so you can generate natively vertical 9:16 footage rather than cropping a landscape render.
Do my credits expire?
No. Unused credits expire at plan renewal/expiration. There is no throttled "unlimited" tier and no queue that slows down the more you use it — you see the price of each generation and pay that.
Compare With Other Models
ByteDance's next-gen flagship Seedance 2.5 video engine. 60 FPS cinematic motion, lifelike human dynamics, reference video support, and native audio.
ByteDance's flagship Seedance 2.0 professional model on Replicate. 4K high-fidelity video with synced audio, intelligent motion, and video reference conditioning.
Google's lightweight Veo 3.1 model on Replicate. Cinematic video generation with synchronized audio at up to 1080p.
Google's high-speed Veo 3.1 video engine on fal.ai. High-fidelity cinematic motion with synchronized audio and rapid rendering.
Generate with Runway Gen-4.5 now
No install, no waitlist, no subscription lock-in. Start with free credits and pay only for what you generate.