Browse ModelsKwaivgiKwaivgi Kling V2.6 Pro Image To Video

Kwaivgi Kling V2.6 Pro Image To Video

Kwaivgi Kling V2.6 Pro Image To Video

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Kling 2.6 Pro delivers top-tier image-to-video generation with smooth motion, cinematic visuals, accurate prompt adherence, and native audio for ready-to-share clips. Ready-to-use REST inference API, best performance, no cold starts, affordable pricing.

Features

Kling 2.6 Pro Image-to-Video

Kling 2.6 Pro Image-to-Video adds audio-video co-generation to Kling’s powerful visual pipeline. Start from a still image, write a prompt, and the model produces a short clip where motion, camera, sound effects, and voice all feel like one coherent scene.


Why Choose This?

  • Audio and video in one pass Jointly generates visuals and soundtrack — no post-production audio sync needed.

  • Character-synced voices Speech and reactions that match the on-screen subject and timing.

  • Scene-aware sound design Ambient noise and SFX that follow what happens in the frame.

  • Start and end frame support Use both a starting image and optional ending image to guide the animation.

  • Voice customization Add custom voices via voice_list for character-specific audio.

  • Prompt Enhancer Built-in tool to automatically improve your prompts for better results.


Parameters

ParameterRequiredDescription
promptYesDescribe scene motion, camera moves, and audio
imageYesStarting frame to animate (upload or URL)
negative_promptNoElements to avoid in visuals and audio
end_imageNoEnding frame to guide the animation target
cfg_scaleNoGuidance strength (default: 0.5)
soundNoEnable audio-video co-generation (default: true)
voice_listNoCustom voices for character audio
durationNoVideo length: 5 or 10 seconds

CFG Scale Guide

  • Lower values (0.3-0.5): Looser, more natural motion; image has more influence
  • Higher values (0.6-0.8): Closer adherence to prompt; can look more “controlled”

How to Use

  1. Upload your image — the starting frame to animate.
  2. Write your prompt — describe camera movement, actions, and audio.
  3. Add negative prompt (optional) — specify what to avoid.
  4. Upload end image (optional) — guide where the animation should end.
  5. Adjust cfg_scale — start with default 0.5, increase if needed.
  6. Enable sound — check for audio generation, uncheck for silent video.
  7. Add voices (optional) — click ”+ Add Item” for custom character voices.
  8. Select duration — choose 5 or 10 seconds.
  9. Run — submit and download your video.

Pricing

DurationSound OffSound On
5s$0.35$0.70
10s$0.70$1.40

Billing Rules

  • Base rate: $0.35 per 5 seconds (without audio)
  • Audio multiplier: 2× when sound is enabled
  • Total cost = $0.35 × (duration / 5) × (sound ? 2 : 1)

Best Use Cases

  • Promo Videos — Launch videos with native-sounding, character-synced voiceover.
  • Storytelling — Shorts where camera, action, and sound feel perfectly integrated.
  • Product Explainers — Clear visuals with natural narration built in.
  • Social Content — Cinematic posts with immersive ambience and SFX.
  • Animated Scenes — Bring still images to life with coherent motion and audio.

Pro Tips

  • Keep the image and prompt aligned — don’t describe a totally different scene.
  • For strong lip-sync, explicitly mention who is speaking and what voice style you want.
  • Start with default cfg_scale (0.5); increase slowly if motion doesn’t match your description.
  • Use negative_prompt to reduce logos, watermarks, or unwanted artifacts.
  • Use end_image to guide the animation toward a specific final composition.
  • Include audio cues in your prompt (e.g., “soft city ambience, subtle whooshes on cuts”).

Notes

  • Supported durations are 5 and 10 seconds.
  • Audio generation doubles the cost but creates synchronized sound design.
  • For best results, use sharp, well-lit source images.
  • End image helps create more controlled transitions.
  • End image and sound cannot be used together. When using end_image, the sound parameter must be disabled.

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-v2.6-pro/image-to-video" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "cfg_scale": 0.5,
    "duration": 5
}'

# 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
imagestringYes-Supported image formats:.jpg /.jpeg /.png The size of the image file should not exceed 10MB, the width and height of the image should be no less than 300px, and the aspect ratio of the image should be between 1:2.5 and 2.5:1
promptstringYes-The positive prompt for the generation.
negative_promptstringNo-The negative prompt for the generation.
end_imagestringNo--URL of the ending image.
cfg_scalenumberNo0.50.00 ~ 1.00Flexibility in video generation; The higher the value, the lower the model’s degree of flexibility, and the stronger the relevance to the user’s prompt.
soundbooleanNo--Whether sound is generated simultaneously when generating a video
voice_listarrayNo--List of tones referenced when generating videos. When the voice_id parameter is not empty the voice ID, the video generation task will be billed based on the with voice generation” metric.
durationintegerNo55, 10The duration of the generated media in seconds.

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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