Browse ModelsKwaivgiKwaivgi Kling Video O3 Pro Text To Video

Kwaivgi Kling Video O3 Pro Text To Video

Kwaivgi Kling Video O3 Pro Text To Video

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Kling Omni Video O3 is Kuaishou’s advanced unified multi-modal video model with MVL (Multi-modal Visual Language) technology. Text-to-Video mode generates cinematic videos from text prompts with subject consistency, natural physics simulation, and precise semantic understanding. Supports audio generation. Ready-to-use REST API, best performance, no coldstarts, affordable pricing.

Features

Kling Video O3 Pro Text-to-Video

Kling Video O3 Pro is Kuaishou’s flagship text-to-video model, delivering cinematic-quality video generation from natural language prompts. It combines physics-aware motion simulation, high temporal consistency, and optional synchronized audio generation to produce professional-grade video content from detailed text descriptions.


Why Choose This?

  • Cinematic-quality output Produces richly detailed, visually coherent video with professional-grade lighting, composition, and motion rendering.

  • Physics-aware motion Understands real-world dynamics — fluid movement, fabric, hair, and object interactions behave naturally and believably.

  • Synchronized audio generation Enable the sound option to generate matching ambient audio, sound effects, and atmosphere alongside your video.

  • Multi-prompt support Chain multiple prompt segments to guide scene transitions and narrative flow within a single generation.

  • Element list control Reference specific visual elements to maintain consistency in characters, objects, or stylistic details across the clip.

  • Flexible aspect ratios Supports multiple orientations including 16:9, 9:16, and 1:1 for social, cinematic, and square formats.


Parameters

ParameterRequiredDescription
promptYesText description of the scene, action, camera style, lighting, and mood.
aspect_ratioNoOutput aspect ratio. Options: 16:9, 9:16, 1:1.
durationNoClip length in seconds. Options: 5, 10.
soundNoWhether to generate synchronized audio for the video. Default: off.
multi_promptNoAdditional prompt segments to guide scene progression and transitions.
element_listNoList of specific visual elements to maintain across the generation.

How to Use

  1. Write your prompt — describe the scene, characters, camera movement, lighting style, and mood in detail. Use the Prompt Enhancer for better results.
  2. Select aspect ratio — choose 16:9 for cinematic/landscape, 9:16 for portrait/social, or 1:1 for square formats.
  3. Set duration — choose 5 or 10 seconds based on your scene length.
  4. Enable sound (optional) — check the sound option to generate matching audio alongside the video.
  5. Add multi-prompt segments (optional) — click Add Item to guide scene transitions with additional prompts.
  6. Add element list items (optional) — specify visual elements to maintain consistency throughout the clip.
  7. Submit — generate, preview, and download your video.

Pricing

DurationWithout SoundWith Sound
5s$0.56$0.70
10s$1.12$1.40

Billing Rules

  • Base rate: $0.112 per second
  • Sound surcharge: +25% when sound is enabled
  • Duration options: 5 or 10 seconds
  • Billing is based on the selected duration and sound setting

Best Use Cases

  • Cinematic Storytelling — Render rich, narrative-driven scenes from detailed prompts with broadcast-quality output.
  • Commercial & Brand Video — Produce premium marketing footage without a film crew.
  • Social Media Content — Generate portrait or square clips with synchronized audio for maximum engagement.
  • Concept Visualization — Bring creative directions, moods, and visual concepts to life quickly for client review.
  • Music & Audio-Visual Projects — Use sound generation for immersive, atmosphere-driven clips.

Pro Tips

  • The more specific your prompt, the better — include camera angle, lighting era, character behavior, and atmosphere.
  • Use multi_prompt to create smooth narrative progressions across a single clip.
  • Enable sound when generating scenes with ambient environments, crowds, or action for a more immersive result.
  • Start with a 5-second generation without sound to validate your prompt before committing to a longer, audio-enabled run.
  • Use element_list to lock in key visual details that must remain consistent throughout the video.

Notes

  • Only prompt is a required field; all other parameters are optional.
  • Sound generation adds 25% to the base cost.
  • Please follow Kuaishou’s content usage policies when crafting prompts.
  • Using element_list: First use Kling Elements to generate your element and note its name and ID. Then simply write the element name naturally in your prompt, and enter the corresponding element ID in the element_list field. No special characters or syntax required.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result


# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/kwaivgi/kling-video-o3-pro/text-to-video" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "aspect_ratio": "16:9",
    "duration": 5,
    "sound": false
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"

Parameters

Task Submission Parameters

Request Parameters

ParameterTypeRequiredDefaultRangeDescription
promptstringYes-The positive prompt for the generation.
aspect_ratiostringNo16:916:9, 9:16, 1:1The aspect ratio of the generated video.
durationintegerNo53, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15The duration of the generated media in seconds (3-15).
soundbooleanNofalse-Whether to generate audio for the video.
multi_promptarrayNo--List of multi-prompt elements for the generation.
element_listarrayNo--Element reference list.

Response Parameters

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
data.idstringUnique identifier for the prediction, Task Id
data.modelstringModel ID used for the prediction
data.outputsarrayArray of URLs to the generated content (empty when status is not completed)
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to retrieve the prediction result
data.has_nsfw_contentsarrayArray of boolean values indicating NSFW detection for each output
data.statusstringStatus of the task: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds

Result Request Parameters

ParameterTypeRequiredDefaultDescription
idstringYes-Task ID

Result Response Parameters

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
dataobjectThe prediction data object containing all details
data.idstringUnique identifier for the prediction, the ID of the prediction to get
data.modelstringModel ID used for the prediction
data.outputsstringArray of URLs to the generated content (empty when status is not completed).
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to retrieve the prediction result
data.statusstringStatus of the task: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds
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