# Kling O1 | Reference Image to Video

Transforms images, elements, and text into consistent, high-quality video scenes, maintaining stable character identity, detailed objects, and coherent environments throughout the animation.

## API Information

- **Model Slug:** kling-o1-reference-image-to-video
- **Branded URL:** https://www.eachlabs.ai/kling/kling-o1/kling-o1-reference-image-to-video
- **Provider:** Kling
- **Category:** Reference to Video
- **Output Type:** video
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** Unit-based pricing: $0.14 per Kling unit
- **Estimated Processing Time:** 250 seconds
- **Last Updated:** 2026-06-17
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/kling-o1-reference-image-to-video

## Pricing

- **Charge Type:** dynamic
- **Pricing Details:** Unit-based pricing: $0.14 per Kling unit

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| Rule 1 | Unit-based pricing: $0.14 per Kling unit |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | Take @Element1, @Element2 to reference elements and @Image1, @Image2 to reference images in order. |
| image_urls | array | No | - | 0–4 | - |
| elements | array | No | - | 0–4 | - |
| duration | integer | No | 5 | 5,10 | - |
| aspect_ratio | string | No | 16:9 | 16:9,9:16,1:1 | The aspect ratio of the generated video frame. |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-o1-reference-image-to-video",
  "input": {
    "prompt": "Take @Image1 as the start frame. Begin with a high-angle aerial shot of the full luxury yacht cruising over crystal-clear turquoise water. The camera gently descends toward the vessel, gliding smoothly along its sunlit decks and polished railings. As it reaches the main walkway, transition into @Element1, revealing the woman standing on the side deck with her back turned, looking out over the ocean.\\nThe camera continues forward in a seamless movement until the woman slowly turns her head toward the camera. Match the style, lighting, color palette, and overall aesthetic of @Image2 as her face comes into full view.\\nMaintain fluid momentum as the camera transitions into a gradual zoom-out, revealing @Element2 — the vintage Polaroid camera she is holding. End the sequence with the camera stabilized in a cinematic, softly lit final composition, capturing the elegance of the woman, the yacht scenery, and the warm golden-hour atmosphere."
  }
}'
```

## Output Schema

Response returned by `GET /v1/prediction/{id}` when the job completes:

```json
{
  "status": "success",
  "predictionID": "string",
  "output": "string (URL of generated video)",
  "metrics": {
    "predict_time": "number (seconds)"
  }
}
```

## Polling

```bash
curl https://api.eachlabs.ai/v1/prediction/{PREDICTION_ID} \
  -H "Authorization: Bearer YOUR_API_KEY"
```

| Status | Meaning |
|--------|---------|
| `processing` | Still running — poll again |
| `success` | Done — read `output` |
| `error` | Failed — read `message` / `details` |

## Webhook (alternative to polling)

Pass `"webhook_url": "https://your.host/path"` in the create request. Eachlabs POSTs this payload when the job ends:

```json
{
  "exec_id": "prediction-uuid",
  "status": "succeeded",
  "output": "https://...",
  "error": ""
}
```

`status` is `"succeeded"` or `"failed"`. `exec_id` equals the `predictionID` from create. Return 2xx within 30 seconds.

## Errors

Error body: `{ "status": "error", "message": "...", "details": "..." }`

| Code | Meaning |
|------|---------|
| `400` | Invalid input |
| `401` | Missing / invalid `Authorization` bearer token |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

**kling-o1-reference-image-to-video — Image-to-Video AI Model**

Developed by Kling as part of the **kling-o1** family, **kling-o1-reference-image-to-video** transforms static reference images into dynamic 1080p videos with exceptional structural control, enabling precise animations that maintain character identity, object details, and environmental coherence. This **image-to-video AI model** stands out for creators needing high-control outputs, such as consistent character motion from concept art or product shots, solving the common issue of flickering or identity drift in AI-generated videos. Users searching for "Kling image-to-video" or "best image-to-video AI model" will find **kling-o1-reference-image-to-video** delivers top-tier results through first- and last-frame conditioning, ensuring videos start and end exactly as specified.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `Authorization: Bearer YOUR_API_KEY`. Generate a key from the Eachlabs dashboard at https://www.eachlabs.ai/dashboard/api-keys.
- File-typed parameters (`*_url`, `image_url`, `video_url`, `audio_url`, etc.) accept publicly-reachable HTTPS URLs only. Upload your asset first (GCS / S3 / your CDN) and pass the resulting URL. Data-URIs and localhost URLs are rejected.
- For structured parameters (arrays / objects) send real JSON values, not stringified payloads.
- Monetary values are reported in USD; per-token / per-megapixel rates may be billed in micro-cents internally.
- Prefer `webhook_url` over polling for long-running predictions — see the Webhook Callback section.