Runway Aleph 2 AI video editor
Runway Aleph 2 changes a video you already have. Upload a clip of 2 to 15 seconds, describe the edit (the weather, the time of day, the style, an object), and get the same shot back with the change applied and the original motion followed. Pay per clip with credits: no subscription needed.
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- Price, 5s clip
- 92credits
- Your clip's length
- 2 to 15 seconds
- Best quality
- Standard
- Sound
- Silent
92credits per 5-second clip · packs from $9 for 125 credits (≈ 1 clip) · Pricing
Example prompt. Edit it, or tap Generate to run it as it is.
Runway Aleph 2 samples, with their prompts
Same prompts on every model page, so you can compare models side by side.
“Turn the scene into a snowy winter morning, snow falling over the street and rooftops, keep the tram and the camera move”
“Make it autumn: golden and orange leaves on the trees and the street, soft overcast light, keep the tram and the camera move”
“Change the time of day to deep night, the tram headlamp and windows glowing warm, street lamps lighting the cobblestones, keep the same tram and camera move”
“Repaint the tram bright yellow like a classic city tram, keep the street, the light and the camera move exactly the same”
“Add thick drifting fog down the whole street so the tram emerges from the mist, soft diffused light, keep the same tram and camera move”
“Restyle the whole shot as a hand-drawn anime film, painted backgrounds and clean line work, keep the motion and camera move”
Every sample on this page is Runway Aleph 2 applied to the same 5-second source clip, a Runway Gen-4.5 shot of a vintage tram at dawn (the hero clip on the Runway Gen-4.5 page). The prompt shown is the edit instruction, unedited, sound removed. Hero prompt: “Change to a rainy night with neon reflections on the wet cobblestones, keep the same tram and camera move”
How to use Runway Aleph 2
- 1
Add your video
Upload a clip of 2 to 15 seconds, or pick one from your Library. The edit keeps its motion and length.
- 2
Describe the change
Write one change: the weather, the time of day, the style or an object. Runway Aleph 2 applies it to the whole shot.
- 3
Edit and download
A 5-second clip costs 92 credits, priced per second of your clip. The result lands in your Library, ready to download.
Strong at
- Follows your clip: the timing and the movement of the original carry over, so you edit a shot instead of regenerating it.
- Big changes in one prompt: weather, time of day, season or a full art style, without reshooting.
- Works on any clip you have: AI video, phone footage or an edit from your Library.
Weaker at
- It edits a clip you give it, it does not make one from nothing. To start from a prompt, use Runway Gen-4.5.
- 16:9 clips only, silent output, and the source clip can be at most 15 seconds.
- Small details such as text and fine faces can drift when a whole scene changes. Keep the instruction to one change.
Who it’s for
Social and ads
Turn one good take into several versions: another season, another mood, another look.
Filmmakers
Try a grade, a time of day or a weather change on a shot before you commit to it.
AI video creators
Fix or restyle a generated clip you almost like, instead of regenerating it from scratch.
Runway Aleph 2 settings and prices
| Starts from | Your own video |
|---|---|
| Your clip's length | 2 to 15 seconds |
| Aspect ratios | 16:9 |
| 5s clip | 92 credits |
| Sound | None (silent clips) |
| Made by | Runway |
Compare with similar models
Questions
How much does a Runway Aleph 2 edit cost?
It is priced per second of the clip you upload, and the result is as long as your clip. A 5-second clip costs 92 credits, a 10-second one about twice that. If an edit fails, the credits come back.
What do I need to start?
A video of 2 to 15 seconds in 16:9, and a sentence describing the change. Upload one or pick a clip from your Library.
Does it keep the original motion?
It follows the motion and timing of your source clip, and the result is as long as your clip. Framing can shift, and the more focused the instruction, the closer the result stays to the original.
Can I make a video from text only?
Not with Aleph 2. It needs a source clip. For text-to-video, use Runway Gen-4.5.
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 Aleph 2 app?
No. Runway Aleph 2 is made by Runway; monodrom is an independent studio that runs it alongside other models. We're not affiliated with Runway.