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POST
/
grok
/
extensions
cURL
curl --request POST \
  --url https://api.ttapi.io/grok/extensions \
  --header 'Content-Type: application/json' \
  --header 'TT-API-KEY: <api-key>' \
  --data '
{
  "prompt": "<string>",
  "video": {
    "url": "<string>"
  },
  "duration": 6,
  "model": "grok-imagine-video"
}
'
{
  "status": "SUCCESS",
  "message": "success",
  "data": {
    "job_id": "job_id"
  }
}
This is the video extension endpoint of the Grok Video API, which extends a video by generating continuation content. If you want to see the full API catalog, recommended integration workflow and related capabilities, please read Grok Video API Overview.

Authorizations

​
TT-API-KEY
string
header
required

You can obtain your API key from the TTAPI Dashboard.

Body

application/json
​
prompt
string
required

Prompt describing what should happen next in the video.

​
video
object
required

Video input object. Accepts a public URL, Base64-encoded data URL, or file_id. Maximum input video duration is 15 seconds.

​
duration
integer
default:6

Duration of the extension segment to generate in seconds (1-10). Defaults to 6 seconds if not specified.

Required range: 1 <= x <= 10
​
model
enum<string>
default:grok-imagine-video

Model to be used.

Available options:
grok-imagine-video
Example:

"grok-imagine-video"

Response

Request successful

​
status
string
required
Example:

"SUCCESS"

​
message
string
required
Example:

"success"

​
data
object
required
Example:
{ "job_id": "job_id" }
Last modified on June 11, 2026