Model API

Runway Gen-4.5

Runway Gen-4.5 turns a prompt, or a prompt and a first-frame image, into a 2 to 10 second 720p video. It follows sequenced actions and camera moves closely. For short cinematic shots, product moments and social clips.

Model id

Use this in every request

runway-gen-4-5

Run it

Quote the input, start the generation with the quote, then poll the job. Set RAYWAKE_API_KEY first; see Authentication.

# 1. Price the exact input (quotes are valid for up to 10 minutes)
curl -s https://api.raywake.com/v1/quotes \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "runway-gen-4-5",
  "input": {
    "prompt": "A red ceramic cup on a wooden table, soft morning light"
  }
}'

# 2. Start the generation with the quote_id from step 1
curl -s https://api.raywake.com/v1/generate \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"model": "runway-gen-4-5", "quote_id": "QUOTE_ID", "input": {"prompt":"A red ceramic cup on a wooden table, soft morning light"}}'

# 3. Poll until the status is terminal
curl -s https://api.raywake.com/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $RAYWAKE_API_KEY"

Input

Input fields for runway-gen-4-5
Name	Type	Description
`inputImage`	array of image URLs	Optional first frame image for image-to-video. Leave empty to run text-to-video. Default: `[]`
`prompt`required	string	Required. Describe the video you want to generate. Maximum 1000 characters.
`ratio`	string (enum)	Required. Aspect ratio of the generated video. Choose 'auto' to match the input image's aspect ratio to the closest supported ratio; for text-to-video only supported options are 16:9 and 9:16, auto defaults to 16:9. Default: `auto` One of: `auto`, `16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`
`duration`	integer	Required. Video duration in seconds. Also determines the price. Default: `5`
`contentModeration`	string (enum)	Optional. Public figure moderation threshold. Default to low Default: `low` One of: `auto`, `low`
`seed`	integer	Optional. Fixed seed (0 to 4294967295) for reproducible results.

Output

A succeeded job lists its results under outputs, stored on our side. See Jobs for every field.

Job excerpt

"outputs": [
  { "type": "video", "url": "https://…", "mime_type": "video/mp4", "thumbnail_url": "https://…" }
]

Pricing

2 s$0.39/ video
3 s$0.58/ video
4 s$0.77/ video
5 s$0.96/ video
6 s$1.15/ video
7 s$1.34/ video
8 s$1.53/ video
9 s$1.72/ video
10 s$1.91/ video

The exact charge for your input comes from a quote. How charges settle