# Kling O1 | Image to Video

This model creates smooth transition videos by animating between a start frame and an end frame, guided by text-based style and scene instructions. It ensures coherent motion, consistent lighting, and cinematic visual quality for creative and professional workflows.

## API Information

- **Model Slug:** kling-o1-image-to-video
- **Branded URL:** https://www.eachlabs.ai/kling/kling-o1/kling-o1-image-to-video
- **Provider:** Kling
- **Category:** Image to Video
- **Output Type:** video
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** $0.112 per second of generated video.
- **Estimated Processing Time:** 100 seconds
- **Last Updated:** 2026-06-17
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/kling-o1-image-to-video

## Pricing

- **Charge Type:** dynamic
- **Pricing Details:** $0.112 per second of generated video.

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| Rule 1 | $0.112 per second of generated video. |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | Use @Image1 to reference the start frame, @Image2 to reference the end frame. |
| start_image_url | string | Yes | - | - | Image to use as the first frame of the video.  Max file size: 10.0MB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s |
| end_image_url | string | No | - | - | Image to use as the last frame of the video.  Max file size: 10.0MB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s |
| duration | string | Yes | 5 | 5,10 | - |

## 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-image-to-video",
  "input": {
    "duration": "5",
    "prompt": "A seamless transformation from a warm summer day in Paris to a snowy winter night.\nStart with golden sunlight, green trees, people walking and cycling, a small vintage car parked near the path, and the Eiffel Tower under a clear sky.\nGradually shift to night: trees lose leaves and become snow-covered, street lamps glow warmly, snow begins falling, the ground turns white, and the Eiffel Tower lights up for winter.\nSame camera angle, ultra-realistic, smooth seasonal transition.",
    "start_image_url": "https://storage.googleapis.com/magicpoint/inputs/kling-o1-image-to-video-start-input.png"
  }
}'
```

## 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-image-to-video — Image-to-Video AI Model**

Kling O1 Image-to-Video is a unified multimodal video generation model that transforms static images into fluid, cinematic videos by animating smooth transitions between a start frame and an end frame. Rather than generating video from scratch, this model specializes in structured animation—taking your reference images and text-based creative direction to produce coherent motion with consistent lighting and professional visual quality. This approach solves a critical problem for creators and developers: generating videos with precise control over composition and narrative flow without manual keyframing or complex editing workflows.

As part of Kling's O1 family, this image-to-video model operates within a unified semantic space where text, images, and video inputs work together seamlessly. The architecture prioritizes workflow unification, allowing creators to generate and edit video from multiple input types in a single pass. For professionals building AI video generation APIs or developing creative automation tools, kling-o1-image-to-video delivers the control and consistency that distinguishes production-ready output from generic AI-generated content.

## 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.