Runway Gen-4.5 AI video generator
Runway Gen-4.5 is Runway's video model for realistic motion and close prompt following. Describe a scene, or start from your own image, and get a 2 to 10 second clip in 16:9 or 9:16. Pay per clip with credits: no subscription needed.
Trusted by 1M+ users
- Price, 5s clip
- 40credits
- Clip length
- 2 to 10 seconds
- Best quality
- 720p
- Sound
- Silent
40credits per 5-second 720p clip · packs from $9 for 125 credits (≈ 3 clips) · Pricing
Example prompt. Edit it, or tap Generate to run it as it is.
Runway Gen-4.5 samples, with their prompts
Same prompts on every model page, so you can compare models side by side.
“A street dancer spins through a rain-soaked neon alley at night, the camera circling her in one continuous shot, puddles splashing under her sneakers, reflections of pink and blue signs, cinematic”
“Slow-motion close-up of a barista pouring latte art into a ceramic cup, steam curling up, warm morning window light, shallow depth of field, the camera slowly pushing in”
“A red fox bounds through deep fresh snow in a pine forest at golden hour, low tracking shot running alongside it, powder snow bursting with every leap, breath visible in the cold air”
Every sample on this page was generated with Runway Gen-4.5 from the prompt shown, unedited, sound removed. Hero prompt: “At dawn, a vintage red tram glides slowly toward the camera down an empty cobblestone street lined with old stone buildings, warm golden sunlight flaring between the rooftops, dust glowing in the air, the camera slowly pushing in, shallow depth of field, 35mm film look, cinematic”
How to use Runway Gen-4.5
- 1
Describe the shot
Write what happens and how the camera moves, or add a start image to animate.
- 2
Pick length, shape and quality
Runway Gen-4.5 takes 2 to 10 seconds · 16:9, 9:16 · 720p. The price updates before you generate.
- 3
Generate and download
A 5-second clip at 720p costs 40 credits. Finished clips land in your Library, ready to download.
Strong at
- Motion with believable weight: splashing water, powder snow, steam and fabric move the way you expect.
- Close prompt following: camera moves and lighting you describe show up in the shot.
- Short clips from 2 seconds, so a draft costs very little.
Weaker at
- No generated sound. For clips with sound, use Veo 3.1 Fast.
- Clips top out at 10 seconds, in 16:9 or 9:16 only.
- Only a start frame can be set, no end frame. Seedance 2.0 takes both.
Who it’s for
Social and ads
Vertical 9:16 clips for Reels, Shorts and TikTok, or wider shapes for everything else.
Filmmakers
Previsualise a shot, with its camera move, light and mood, before you ever pick up a camera.
Product and brand teams
Bring product stills to life from a start image, pay per clip, no subscription needed.
Runway Gen-4.5 settings and prices
| Starts from | Text · a start image |
|---|---|
| Clip length | 2 to 10 seconds |
| Aspect ratios | 16:9 · 9:16 |
| 720p, 5s clip | 40 credits |
| Sound | None (silent clips) |
| Made by | Runway |
Compare with similar models
Questions
How much does a Runway Gen-4.5 clip cost?
A 5-second clip costs 40 credits at the default quality. You only spend credits when you generate, and if a generation fails, the credits come back.
How long can a Runway Gen-4.5 video be?
Between 2 and 10 seconds per clip. The price is per second, so a 10-second clip costs about twice a 5-second one.
Can I start from my own image?
Yes. Add a start image and describe the motion; the clip follows the shape of your image.
Do I need a subscription?
No. Buy a credit pack and pay per generation. Pack credits last 12 months. Monthly plans are there if you create regularly and want credits at a lower price.
Is this the official Runway Gen-4.5 app?
No. Runway Gen-4.5 is made by Runway; monodrom is an independent studio that runs it alongside other models. We're not affiliated with Runway.