Kwaivgi Kling V2.6 Pro Text To Video
Playground
Try it on WavespeedAI!Kling 2.6 Pro delivers top-tier text-to-video generation with smooth motion, cinematic visuals, strong 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 Audio — Text-to-Video
Kling 2.6 Audio Text-to-Video turns a text prompt directly into a fully scored clip: camera motion, character action, and soundtrack (voice, ambience, SFX) are generated in one pass, so the scene looks and sounds like it belongs together.
🌟 Model Highlights
- Joint audio–video generation – Visuals and sound are created together, not bolted on after the fact.
- Character-aware voices – Speech that matches who’s on screen, with timing aligned to the action you describe.
- Scene-driven sound design – Ambient noise and effects that follow the camera and events in the shot.
- Script-to-scene pipeline – Start from a natural-language prompt; Kling handles shots, motion, and soundscape.
🧩 Parameters
-
prompt* – Describe what happens in the scene: characters, camera moves, environment, and audio mood (e.g. “Close-up of a robot repairing a neon sign, soft synthwave music, quiet city ambience, no dialogue.”)
-
negative_prompt – Things to avoid in both visuals and audio (logo, watermark, heavy text, glitch, noise).
-
cfg_scale – Guidance strength (default 0.5):
- Lower → looser, more organic; model improvises more.
- Higher → closer to prompt wording; can look or sound more “forced”.
-
sound –
- On → generate video with audio (voice / ambience / SFX where appropriate).
- Off → silent video only (cheaper, same visuals).
-
duration – 5 s or 10 s clips.
🎯 Typical Use Cases
- Social ads or launch teasers with built-in narration and sound design.
- Short story beats, animatics, or previz where visual + audio timing must line up.
- Product explainers with spoken description + on-screen action.
- Cinematic posts and shorts where you want music, ambience, and motion from a single prompt.
💰 Pricing
| Mode | Length | Price |
|---|---|---|
| No Audio | 5 s | $0.35 |
| No Audio | 10 s | $0.70 |
| With Audio | 5 s | $0.70 |
| With Audio | 10 s | $1.40 |
🚀 How to Use
-
Write a prompt describing:
- what the camera sees (shots, motion, setting),
- what characters do,
- and, if sound is on, the voice tone, music style, and ambience/SFX you want.
-
(Optional) Add a negative_prompt for things you don’t want in either image or audio.
-
Tune cfg_scale (start from 0.5; increase only if it’s not following your prompt enough).
-
Toggle sound on/off depending on whether you need audio.
-
Run the model.
🔎 Tips
- Write prompts like a mini shot list + audio brief: who, where, camera, mood, and sound.
- For clearer narration, explicitly specify “single narrator”, voice gender/age, and language/accents.
- Use negative_prompt for “watermark, text, logo, glitch, noisy audio” to keep outputs clean.
- For platform export (Reels/Shorts/TikTok), pick 9:16; for YouTube/web, use 16:9; for feeds/ads, try 1:1.
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/text-to-video" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"cfg_scale": 0.5,
"sound": true,
"aspect_ratio": "1:1",
"duration": 5
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | The positive prompt for the generation. | |
| negative_prompt | string | No | - | The negative prompt for the generation. | |
| cfg_scale | number | No | 0.5 | 0.00 ~ 1.00 | Flexibility 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. |
| sound | boolean | No | true | - | Whether sound is generated simultaneously when generating a video |
| aspect_ratio | string | No | 1:1 | 1:1, 9:16, 16:9 | The aspect ratio of the generated media. |
| duration | integer | No | 5 | 5, 10 | The duration of the generated media in seconds. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | string | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |