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Kling V3(Text-to-video)

Kling flagship text-to-video model

2026-02-06

Video Generation

Pricing:

$0.084/Second

starting from

Bulk order? Contact your manager for exclusive deals

API Overview

Supports synchronous audio generation (sound=True)

Kling V3.0 Text-to-Video is a text-to-video dual-mode product line launched by Kuaishou, featuring two versions: Standard and Pro. Its core positioning is a high-quality short-video API that generates cinematic camera movements, natural subject motions, and optional synchronized sound effects solely based on plain text descriptions.

Dual-version strategy: The Pro version delivers top-tier visual fidelity, smoother motion, and stronger adherence to prompt instructions; the Standard version significantly reduces usage costs while maintaining high availability.
Core capabilities: Both versions support video lengths of 5 or 10 seconds, aspect ratios of 16:9, 9:16, and 1:1, negative prompts, and optional AI-generated sound effects.
Audio integration: The Pro version additionally supports adding up to 2 custom voice entries (voice_list) for character dialogue; the Standard version only supports ambient sound effects.
Applicable scenarios: Social media short videos, marketing ads, creative concept visualization, AI digital human content, and dynamic storytelling with sound effects.
Cost comparison: The Pro version costs about twice as much as the Standard version; users can flexibly choose based on their quality requirements.

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Core Capabilities

🎬 Cinematic Visual Presentation (Pro)

The Pro version comprehensively outperforms in terms of detail, lighting, and motion smoothness, making it ideal for final deliverables.

🔊 Synchronized Audio and Video Generation

When sound is enabled, ambient sound effects matching the visuals are automatically added; the Pro version also allows overlaying custom voices for dialogue.

📱 Multi-platform Aspect Ratio Adaptation

One-click output in 16:9 (YouTube), 9:16 (TikTok/Reels), and 1:1 (Instagram) formats—no cropping required.

🚫 Precise Content Control

Use negative_prompt to exclude unwanted elements such as “blur” or “distortion,” enhancing generation stability.

✨ Intelligent Creation Assistance

We recommend using Prompt Enhancer to automatically add cinematic shot types (e.g., “handheld tracking,” “shallow depth of field”) and elevate the film-like quality of your videos.

Effect Demonstrations

API Console

API Reference (3)

API Description API Endpoint Request Method Stability Parameter Description

Kling v3-std

https://api.302.ai/ws/api/v3/kwaivgi/kling-v3.0-std/text-to-video

POST

Stable

View Details

Document Details

Kling 3.0-std delivers high-quality text-to-video generation with smooth motion, cinematic visuals, accurate prompt adherence, and native audio ready for sharing clips.

Supports synchronous audio generation (sound=True)

Pricing

Duration	Sound Off	Sound On
3s	0.504 PTC	0.756 PTC
5s	0.84 PTC	1.26 PTC
10s	1.68 PTC	2.52 PTC
15s	2.52 PTC	3.78 PTC

Request Parameters

Header Parameters

Authorizationstring

Optional

Example Value:Bearer {{YOUR_API_KEY}}

Request Body application/json

promptstring

Required

📝 Generate Positive Prompts

Core Function: Define the video’s core content, style, dynamic effects, and visual characteristics
Writing Tips: The more specific your description, the closer the generated result will match your expectations (e.g., include color, lighting, and motion details)

Example Value:serene cherry blossom forest in spring, petals falling slowly, soft pink light

negative_promptstring

Optional

🚫 Generate Negative Prompts

Core Function: Exclude unwanted elements, styles, or visual flaws from the video
Recommendation: Clearly specify content to avoid, such as blurry, dark, text, watermark, oversaturated, etc.

Example Value:blurry, dark, text, watermark, oversaturated colors, unnatural motion

durationenum<integer>

Optional

⏱️ Generated video duration (in seconds)

Available options: Only 5 seconds and 10 seconds are supported
Default value if not specified: 5

Enum Value:

510

aspect_ratioenum<string>

Optional

📐 Aspect Ratio of Generated Video

Options: 16:9 (Landscape), 9:16 (Portrait), 1:1 (Square)
Default if not specified: 16:9

Enum Value:

16:99:161:1

cfg_scalenumber

Optional

🎛️ Video Generation Flexibility Factor

Value range: 0.00 ~ 1.00 (two decimal places retained)
⚡ Core rules:
- Higher value → Lower model flexibility → Stronger adherence to prompt
- Lower value → Greater creative freedom for the model → May deviate from prompt but yield richer results
Default value if left blank: 0.5

soundboolean

Optional

🔊 Whether to synchronously generate video audio

true: Generate background audio matching the video style (natural sound effects/light music)
false: Generate video files without audio only

Example Value:true

multi_promptarray[string]

Optional

📜 Multiple Prompt List

Core Function: Define visual changes for different segments of the video sequentially (applied in array order)
Format Requirement: Each element in the array must be an independent prompt text, corresponding to the content of a specific video segment

Example Value:

[
  "cherry blossoms blooming",
  "petals falling gently",
  "sunlight through branches"
]

Kling v3-pro

https://api.302.ai/ws/api/v3/kwaivgi/kling-v3.0-pro/text-to-video

POST

Stable

View Details

Document Details

Kling 3.0 Pro delivers top-tier text-to-video generation with smooth motion, cinematic visuals, accurate prompt adherence, and native audio ready for sharing clips.

Supports synchronous audio generation (sound=True)

Pricing

Duration	Sound Off	Sound On
3s	0.672 PTC	1.008 PTC
5s	1.12 PTC	1.68 PTC
10s	2.24 PTC	3.36 PTC
15s	3.36 PTC	5.04 PTC

Request Parameters

Header Parameters

Authorizationstring

Optional

Example Value:Bearer {{YOUR_API_KEY}}

Request Body application/json

promptstring

Required

📝 Generate Positive Prompts

Core Function: Define the core content, style, visual effects, and dynamic performance of video generation
Writing Tips: Describe clearly and specifically to accurately convey the desired visual characteristics

Example Value:a peaceful mountain lake at sunrise, mist floating on water, soft golden light

negative_promptstring

Optional

🚫 Generate Negative Prompts

Core Function: Exclude unwanted elements, styles, or visual issues from the video
Recommendation: Clearly specify content to avoid, such as blur, low resolution, extraneous objects, etc.

Example Value:blurry, dark, overexposed, text, watermark, messy elements

durationenum<integer>

Optional

⏱️ Video Duration (in seconds)

Options: 5 seconds, 10 seconds
Default if not specified: 5

Enum Value:

510

aspect_ratioenum<string>

Optional

📐 Aspect Ratio of Generated Video

Options: 16:9 (Landscape), 9:16 (Portrait), 1:1 (Square)
Default if not specified: 16:9

Enum Value:

16:99:161:1

cfg_scalenumber

Optional

🎛️ Video Generation Flexibility Coefficient

Range: 0.00 ~ 1.00
Description: The higher the value, the lower the model’s generation flexibility and the stronger its adherence to the prompt; the lower the value, the greater the model’s creative freedom.
Default value if left blank: 0.5

soundboolean

Optional

🔊 Whether to generate audio synchronously for the generated video

true: Generate background audio adapted to the video style and images
false: Only generate pure video files without audio

Example Value:true

multi_promptarray[string]

Optional

📜 Multiple Prompt List

Core Function: Define visual changes and dynamic effects for different time segments of the video; applied sequentially according to array order
Format Requirement: Each element in the array is an independent prompt text, precisely describing the visual characteristics of the corresponding time segment

Example Value:

[
  "sunrise over mountain peaks",
  "mist rising from lake surface",
  "birds flying above water"
]

Fetch

https://api.302.ai/ws/api/v3/predictions/{requestId}/result

GET

Stable

View Details

Document Details

Usage:
Obtain the requestId from the request of a generation task and fill it into the API to retrieve the result.

Price: Free

Request Parameters

Path Parameters

requestIdstring

Required

Header Parameters

Authorizationstring

Required

Example Value:Bearer {{YOUR_API_KEY}}

API Pricing

$￥円 ₽

Model	Description	302.AI Price

Kling v3-std	No synchronous sound is generated	$0.084/Second
Kling v3-std	Generate synchronous sound	$0.126/Second
Kling v3-pro	No synchronous sound is generated	$0.112/Second
Kling v3-pro	Generate synchronous sound	$0.168/Second
Fetch	Fetch Task	Free

Kling V3(Text-to-video)

API Overview

Core Capabilities

Effect Demonstrations

API Console

API Reference (3)

Header Parameters

Request Body application/json

Header Parameters

Request Body application/json

Path Parameters

Header Parameters

API Pricing

Kling v3-std

$0.084/Second

Kling v3-std

$0.126/Second

Kling v3-pro

$0.112/Second

Kling v3-pro

$0.168/Second

Fetch

Free

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