Grok Imagine Video - Ekly API

xAI’s video generation with native audio, dialogue, and sound effects in a single pass. Ultra-fast (~17s generation). 1-15 second output.


Model id	`grok-imagine-video-fal`
Media	video
Submit to	`POST /v1/videos`
Price	13 credits per_second before discounts
Typical time	about 30.0 s

Request

Required: prompt
Optional: aspect_ratio, duration_seconds, quality, reference_images

{
  "model": "grok-imagine-video-fal",
  "prompt": "Wide tracking shot past buffet tables, warm night wedding light, shallow depth, photoreal, no faces sharp in frame. No text.",
  "aspect_ratio": "16:9",
  "duration_seconds": 6,
  "quality": "720p"
}

Field	Allowed	Default
`aspect_ratio`	`16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `3:2`, `2:3`	`"16:9"`
`duration_seconds`	1.0 – 15.0 seconds	`6`
`quality`	`480p`, `720p`	`"720p"`
`reference_images`	asset ids (up to 7)

Reference inputs take asset ids from POST /v1/uploads or an earlier output’s asset_id. Prices and allowed values come from the live catalog; GET /v1/models/grok-imagine-video-fal is always current.