Grok Imagine Video 1.5 - Ekly API

Generate videos with native synchronized audio from a prompt, an opening image, or up to seven reference images.


Model id	`grok-imagine-video-1.5-fal`
Media	video
Submit to	`POST /v1/videos`
Price	varies by tier and settings; `GET /v1/models/grok-imagine-video-1.5-fal/estimate` quotes it
Typical time	about 30.0 s

Text → Video

Generate a video with synchronized audio from a prompt. Select it with "mode": "text_to_video", or leave mode out and the inputs decide. Required: prompt, duration_seconds
Optional: aspect_ratio Resolution tiers: 480p, 720p, 1080p (send as tier).

{
  "model": "grok-imagine-video-1.5-fal",
  "prompt": "Wide tracking shot past buffet tables, warm night wedding light, shallow depth, photoreal, no faces sharp in frame. No text.",
  "mode": "text_to_video",
  "aspect_ratio": "16:9",
  "duration_seconds": 6,
  "tier": "720p"
}

Field	Allowed	Default
`aspect_ratio`	`16:9`, `4:3`, `3:2`, `1:1`, `2:3`, `3:4`, `9:16`	`"16:9"`
`duration_seconds`	1.0 – 15.0 seconds	`6`

Image → Video

Animate an opening image with synchronized audio. Output framing follows the image. Select it with "mode": "image_to_video", or leave mode out and the inputs decide. Required: prompt, first_frame, duration_seconds
Optional: none Resolution tiers: 480p, 720p, 1080p (send as tier).

{
  "model": "grok-imagine-video-1.5-fal",
  "prompt": "Wide tracking shot past buffet tables, warm night wedding light, shallow depth, photoreal, no faces sharp in frame. No text.",
  "mode": "image_to_video",
  "duration_seconds": 6,
  "first_frame": "asset_…",
  "tier": "720p"
}

Field	Allowed	Default
`duration_seconds`	1.0 – 15.0 seconds	`6`
`first_frame`	asset id (up to 1)

Reference → Video

Guide the video with one to seven reference images. This mode supports 480p and 720p. Select it with "mode": "reference_to_video", or leave mode out and the inputs decide. Required: prompt, reference_images, duration_seconds
Optional: aspect_ratio Resolution tiers: 480p, 720p (send as tier).

{
  "model": "grok-imagine-video-1.5-fal",
  "prompt": "Wide tracking shot past buffet tables, warm night wedding light, shallow depth, photoreal, no faces sharp in frame. No text.",
  "mode": "reference_to_video",
  "aspect_ratio": "16:9",
  "duration_seconds": 8,
  "reference_images": [
    "asset_…"
  ],
  "tier": "720p"
}

Field	Allowed	Default
`aspect_ratio`	`16:9`, `4:3`, `3:2`, `1:1`, `2:3`, `3:4`, `9:16`	`"16:9"`
`duration_seconds`	1.0 – 15.0 seconds	`8`
`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-1.5-fal is always current.