Runway Aleph 2
Runway · Video · 16:9, 4:3, 3:2…
Your video will appear here
Fill in the settings and press Run. The result is also saved to your library.
Price
Reference price
No published price yet - this model is not in the public price list.
What the price depends on
- This model is billed per generation, so the price does not depend on how long you wait.
- Resolution and quality settings change the price. Change one and the number above follows.
- A generation the provider fails is not charged. A chat answer is charged for what the model wrote and thought, even if you stop it.
Prices are in credits. What a credit costs is on the pricing page.
Which one to pick
| Model | Key specs | Price from |
|---|---|---|
| Runway Gen-4.5 | 5, 10s · 16:9, 9:16, 4:3… | — |
| Runway Aleph 2· you are here | 16:9, 4:3, 3:2… | — |
| Runway Gen-4 | 5, 10s | — |
| Runway Aleph | — | — |
| Runway Gen-4 Turbo | 5, 10s | — |
| Runway Act-Two | — | — |
| Runway Expand | 5, 10s · 3:5, 5:3 | — |
About the model
Runway Aleph 2.0 edits a clip you supply by instruction, keeping what is not meant to change; an optional reference image.
- Produces
- Video
- Takes
- text, video, pictures
- Frame shape
- 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 21:9
What you can set
Every setting of this model and the choices it allows — the same as in the form.
- Driving videorequiredone file
- Style referencesone file
- Aspect ratioAuto16:94:33:21:12:33:49:1621:9
- Seedyour own text
For developers
Run this from your own code
The same request the Generate tab sends, with the settings you have chosen.
runway-aleph-2curl -X POST https://seedara.ai/api/v1/generate \
-H "Authorization: Bearer $SEEDARA_API_KEY" \
-H "Content-Type: application/json" \
--data '{
"model": "runway-aleph-2",
"prompt": "Describe the shot: subject, action, camera move, lighting...",
"params": {
"aspect_ratio": "auto"
}
}'This snippet updates as you change the form. Copy it once the settings are the ones you want.
Request parameters
What goes in `params`, by the names the API uses.
Required
The model refuses the request without these.
| Parameter | Type | Accepted values | Default |
|---|---|---|---|
video_urlDriving video | video | — | — |
Optional
Left out unless you set them - the provider then applies its own default.
| Parameter | Type | Accepted values | Default |
|---|---|---|---|
reference_image_urlsStyle references | images | up to 1 files | — |
aspect_ratioAspect ratio | one of a list | auto16:94:33:21:12:33:49:1621:9 | auto |
seedSeed | whole number | — | — |
How a generation runs
- POST /v1/generate answers immediately with a job_id - it does not wait for the result.
- Poll GET /v1/jobs/{id} until status is completed or failed.
- A completed job carries output_url - the finished file.
curl https://seedara.ai/api/v1/jobs/JOB_ID \
-H "Authorization: Bearer $SEEDARA_API_KEY"Frequently asked about Runway Aleph 2
NewYour first video —
in a minute
Describe what you want to see — the model does the rest.
- No auto-charges
- Pay only for a finished result
- Works are kept in your Library
