# Grok Imagine

> xAI video up to 15 seconds from a description or a photo; it can also change your video.

Grok Imagine is an xAI video model. It films 1 to 15 second clips in 480p and 720p from a description or your photos (up to 7), and changes a finished clip from a description: style, clothes, background. For editing use a clip up to 8 seconds — the result has the same length.

You pay per second of the clip; when editing, per second of the source clip.

One model, `grok-imagine` · ~1.5 min. The result follows the `input` fields (prompt, frames, references, `video_mode`, duration) — there are no separate «animate / edit» endpoints.

## Features

- `nsfw_check` — check before charge
- Clip edit via `video_urls` (up to 8 s)

## Price

| Resolution | Price per second |
|---|---|
| 480p | $0.06 |
| 720p | $0.084 |

- Price = per-second price × clip length, rounded up to $0.001. Charged when the task is created and fully refunded if it fails.
- Each attached photo adds $0.0024.
- With an uploaded video: $0.096 per second of the source clip (up to 8 s); the result has the same length. `resolution`, `aspect_ratio` and `duration` are not needed — they come from the clip.

## Media limits

| Type | Limits |
|---|---|
| Images | up to **7**; JPG / PNG / WebP; upload via [files/upload](https://docs.mixmedia.tech/en/endpoints/upload) — up to **30 MB** per file |
| Videos | up to **1**; total ≤ **8 s** (each clip 2…8 s); MP4 / MOV → MP4 on the server; upload ≤ **200 MB** |

Photos — public https or upload; video and audio — files/upload only.

## How the task is shaped

| Fields | Mode |
|---|---|
| `prompt` only | text → video |
| `image_urls` | photos → video (up to 7) |
| `video_urls` | edit clip (up to 8 s); `resolution` / `aspect_ratio` / `duration` come from the clip |

Upstream rejects `aspect_ratio` «auto» — text defaults to `16:9`; with a photo the frame follows the photo.


## Parameters (field `input`)

| Parameter | Description | Values (default in bold) |
|---|---|---|
| `prompt` | What happens in the clip: scene, motion, camera, light, style | text, up to 8000 chars |
| `image_urls` | Your photos (https): a single photo becomes the first frame | `["https://…"]`, up to 7 |
| `video_urls` | Your videos (MP4): upload them via files/upload first and pass the returned links | `["https://…"]`, up to 1 |
| `resolution` | Video resolution | **`480p`** · `720p` |
| `aspect_ratio` | Aspect ratio | **`16:9`** · `9:16` · `1:1` · `4:3` · `3:4` · `3:2` · `2:3` |
| `duration` | Video duration in seconds | 1 to 15 (default **`8`**) |
| `nsfw_check` | Content check: the description and photos are checked first; if not allowed, no task is created and nothing is charged | `true` `false` (default `false`) |
| `trim_video_to` | Trim each of your clips to N seconds: the beginning stays. Shorter clips are not changed | whole number, 2 to 8 |
| `auto_trim` | If your clips together are longer than 8 s, trim them instead of returning an error (the longest first) | `true` `false` (default `false`) |

## Examples

### Prompt only

```bash
curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"grok-imagine","input":{"prompt":"A drone flies over an autumn forest at sunrise, fog, cinematic","resolution":"480p","aspect_ratio":"16:9","duration":"8"}}'
```

```python
import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "grok-imagine",
      "input": {
        "prompt": "A drone flies over an autumn forest at sunrise, fog, cinematic",
        "resolution": "480p",
        "aspect_ratio": "16:9",
        "duration": "8"
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}
```

```javascript
const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "grok-imagine",
    "input": {
      "prompt": "A drone flies over an autumn forest at sunrise, fog, cinematic",
      "resolution": "480p",
      "aspect_ratio": "16:9",
      "duration": "8"
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }
```

### With a first frame

```bash
curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"grok-imagine","input":{"prompt":"The character slowly turns to the camera, the wind moves the hair","image_urls":["https://mixmedia.tech/static/img/previews/gpt-t2i.jpg"],"resolution":"480p","duration":"8"}}'
```

```python
import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "grok-imagine",
      "input": {
        "prompt": "The character slowly turns to the camera, the wind moves the hair",
        "image_urls": [
          "https://mixmedia.tech/static/img/previews/gpt-t2i.jpg"
        ],
        "resolution": "480p",
        "duration": "8"
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}
```

```javascript
const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "grok-imagine",
    "input": {
      "prompt": "The character slowly turns to the camera, the wind moves the hair",
      "image_urls": [
        "https://mixmedia.tech/static/img/previews/gpt-t2i.jpg"
      ],
      "resolution": "480p",
      "duration": "8"
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }
```

### With your video

```bash
curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"grok-imagine","input":{"prompt":"Make the clip anime style, keep everything else","video_urls":["https://mixmedia.tech/files/<id>.mp4"]}}'
```

```python
import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "grok-imagine",
      "input": {
        "prompt": "Make the clip anime style, keep everything else",
        "video_urls": [
          "https://mixmedia.tech/files/<id>.mp4"
        ]
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}
```

```javascript
const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "grok-imagine",
    "input": {
      "prompt": "Make the clip anime style, keep everything else",
      "video_urls": [
        "https://mixmedia.tech/files/<id>.mp4"
      ]
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }
```

## Trim your video

Your clip: up to 8 s. No need to cut a long clip beforehand: `auto_trim: true` cuts it to 8 s, `trim_video_to: N` to N s (the beginning stays). Trimming is free; the price uses the trimmed seconds.

```bash
curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"grok-imagine","input":{"prompt":"Make the clip anime style, keep everything else","video_urls":["https://mixmedia.tech/files/<id>.mp4"],"auto_trim":true}}'
```

```python
import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "grok-imagine",
      "input": {
        "prompt": "Make the clip anime style, keep everything else",
        "video_urls": [
          "https://mixmedia.tech/files/<id>.mp4"
        ],
        "auto_trim": True
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}
```

```javascript
const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "grok-imagine",
    "input": {
      "prompt": "Make the clip anime style, keep everything else",
      "video_urls": [
        "https://mixmedia.tech/files/<id>.mp4"
      ],
      "auto_trim": true
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }
```

One uploaded file: up to 30 s. Without these options, clips that are too long return a `400` error with a hint.

## Create and result

1. `POST /api/v1/jobs/createTask` with `model` and `input`.
2. Poll `GET /api/v1/jobs/recordInfo?taskId=…` every 3–5 s (or a [callback](https://docs.mixmedia.tech/en/callbacks)).

### Successful createTask (HTTP 200)

```json
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_...",
    "task_id": "task_...",
    "status": "submitted"
  }
}
```

### Completed task (recordInfo)

```json
{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_...",
    "task_id": "task_...",
    "state": "success",
    "status": "completed",
    "costUsd": "0.384",
    "refunded": false,
    "resultJson": {
      "videos": [
        {
          "url": "https://…/out.mp4"
        }
      ],
      "duration": 8
    }
  }
}
```

Aliases: `task_id` = `taskId`; `status`: `pending` / `processing` / `completed` / `failed` alongside `state`. Clip URL is in `resultJson`. `size` is an alias of `aspect_ratio` in `input`.


Photos can be any public https links or uploads via [files/upload](https://docs.mixmedia.tech/en/endpoints/upload). Videos and audio — via files/upload only.

## Error handling

API responses are JSON `{"code", "msg", "data"}`; errors also have a string `error` field (type). **On `/api/v1/*` the HTTP status matches body `code`.**

### Example response bodies

**400**

```json
{
  "code": 400,
  "msg": "input.duration: must be between 4 and 30, or \"auto\" / -1",
  "data": null,
  "error": "invalid_request_error"
}
```

**401**

```json
{
  "code": 401,
  "msg": "Authentication failed. Please check your API key",
  "data": null,
  "error": "authentication_error"
}
```

**402**

```json
{
  "code": 402,
  "msg": "Insufficient balance. Please top up and try again. Available: $0.01, required: $0.015. Top up at https://ai.aimixmedia.site/cabinet/billing",
  "data": {
    "balance": "0.0100",
    "required": "0.0150",
    "currency": "USD",
    "topUpUrl": "https://mixmedia.tech/cabinet/billing"
  },
  "error": "payment_required"
}
```

**429**

```json
{
  "code": 429,
  "msg": "Rate limit exceeded: 10 createTask/upload requests per 10 s per key. Retry after 8s",
  "data": null,
  "error": "rate_limit_error"
}
```

**500**

```json
{
  "code": 500,
  "msg": "Internal server error",
  "data": null,
  "error": "server_error"
}
```

### Codes on createTask / upload

| code | error | Meaning | What to do |
|---|---|---|---|
| 400 | `invalid_request_error` | Invalid parameter or body | See `msg` |
| 400 | `unsupported_model` | Unknown model | [Model list](https://docs.mixmedia.tech/en/models) |
| 400 | `nsfw_content_detected` | Rejected by content check (`nsfw_check`) | Change the prompt or files |
| 401 | `authentication_error` | Missing or invalid key | Check the key |
| 402 | `payment_required` | Not enough balance | Top up |
| 403 | `permission_error` | No access | Contact support |
| 429 | `rate_limit_error` | Too many requests | Wait for `Retry-After` |
| 505 | `model_disabled` | Model temporarily disabled | Pick another |
| 500 | `server_error` | Our failure | Retry later |

Example `msg` values: `Authentication failed. Please check your API key` (401); `Insufficient balance. Please top up and try again…` (402).

### Task errors (recordInfo)

If the task was created and then failed: `state: "fail"` (alias `status: "failed"`), `failCode` / `failMsg`, and `error: { code, message, type }`. Money is refunded (`refunded: true`).

| failCode | error.type | Meaning |
|---|---|---|
| 400 | `nsfw_content_detected` / `invalid_request_error` | Moderation / safety rules |
| 422 | `invalid_request_error` | The model rejected the parameters (length, mode, resolution, file) |
| 501 | `server_error` | The model could not generate (`failMsg`) |
| 504 | `timeout_error` | Timed out — retry |
| 500 / 503 | `server_error` | Service temporarily unavailable |

### Rate limits

| What | Limit |
|---|---|
| createTask and upload | 20 per 10 s per key |
| recordInfo / list / balance | 100 per 10 s per key |

Over the limit — HTTP 429 and `Retry-After`.