# Kling | v3 | Pro | Text to Video

Kling 3.0 Pro delivers premium text-to-video generation with cinematic visuals, smooth motion, native audio, and support for multi-shot sequences.

## API Information

- **Model Slug:** kling-v3-pro-text-to-video
- **Branded URL:** https://www.eachlabs.ai/kling/kling-v3/kling-v3-pro-text-to-video
- **Provider:** Kling
- **Category:** Text to Video
- **Output Type:** video
- **Status:** active
- **Version:** 0.0.1
- **Estimated Processing Time:** 160 seconds
- **Last Updated:** 2026-05-25
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/kling-v3-pro-text-to-video

## Pricing

Pricing information not available.

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | No | - | - | Text prompt for video generation. Either prompt or multi_prompt must be provided, but not both. |
| duration | string | No | 5 | 3,4,5,6,7,8,9,10,11,12,13,14,15 | The duration of the generated video in seconds |
| multi_prompt | array | No | - | 0–5 | List of prompts for multi-shot video generation. If provided, overrides the single prompt and divides the video into multiple shots with specified prompts and durations. |
| generate_audio | boolean | No | true | - | Whether to generate native audio for the video. Supports Chinese and English voice output. Other languages are automatically translated to English. For English speech, use lowercase letters; for acronyms or proper nouns, use uppercase. |
| voice_ids | array | No | - | - | Optional Voice IDs for video generation. Reference voices in your prompt with <<<voice_1>>> and <<<voice_2>>> (maximum 2 voices per task). Get voice IDs from the kling video create-voice endpoint: https://www.eachlabs.ai/kling/kling-voice/kling-voice-create |
| shot_type | string | No | customize | customize,intelligent | The type of multi-shot video generation |
| aspect_ratio | string | No | 16:9 | 16:9,9:16,1:1 | The aspect ratio of the generated video frame |
| negative_prompt | string | No | blur, distort, and low quality | - | - |
| cfg_scale | number | No | 0.5 | 0–1 | The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-v3-pro-text-to-video",
  "input": {}
}'
```

## 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 "X-API-Key: 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 `X-API-Key` |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

**kling-v3-pro-text-to-video — Text to Video AI Model**

Developed by Kling as part of the **kling-v3** family, **kling-v3-pro-text-to-video** is a premium text-to-video AI model that transforms detailed prompts into cinematic videos with native audio, smooth motion, and professional camera control. This **text-to-video AI model** stands out for its Motion Brush tool, enabling precise motion paths on images, and multi-subject handling that maintains character consistency in complex scenes. Ideal for creators seeking **Kling text-to-video** capabilities, it supports up to 10-15 seconds of high-fidelity footage at 1080p or native 4K with AI upscaling, delivering broadcast-quality results in minutes.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `X-API-Key: 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.