Kling V2.6 Text to Video API
kwaivgi/kling-v2.6/text-to-video
Kling 2.6 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.
Examples
Parameters
| Name | Type | Default | Constraints | Description |
|---|---|---|---|---|
| prompt *Prompt | textarea | — | ≤ 5000 chars | The positive prompt for the generation. |
| negative_promptNegative Prompt | textarea | — | ≤ 5000 chars | The negative prompt for the generation. |
| resolutionGeneration Mode | select | 720P | 720P | 1080P | |
| aspect_ratioAspect Ratio | select | 1:1 | 1:1 | 9:16 | 16:9 | The aspect ratio of the generated media. |
| durationDuration | slider | 5 | 3 ~ 15 · step 1 | The duration of the generated media in seconds. |
| soundSound | boolean | false | — | Whether sound is generated simultaneously when generating a video. When enabling sound, use 1080P resolution (sound is not supported at 720P standard mode). |
| cfg_scaleCfg Scale | number | 0.5 | — | 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. |
| multi_shotMulti Shot | boolean | — | — | Whether to generate multi-shot video When true: the prompt parameter is invalid. When false: the shot_type and multi_prompt parameters are invalid |
| shot_typeShot Type | select | — | customize | intelligence | Shot type for the generation. |
| multi_promptMulti Prompt | array<object> | — | — | List of multi-prompt elements for the generation. |
| ↳durationDuration | number | 5 | — | The duration of this shot in seconds. |
| ↳promptPrompt | text | — | — | The prompt for this shot. |
API
Call this model through one unified REST API. Get a key on the API Keys page.
cURL
# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/kwaivgi/kling-v2.6/text-to-video" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"input": {
"prompt": "A futuristic cityscape at sunset with flying cars and glowing neon signs, cinematic style",
"negative_prompt": "Blurry visuals, low-quality textures, unrealistic lighting",
"resolution": "720P",
"aspect_ratio": "16:9",
"duration": 10,
"sound": false,
"cfg_scale": 0.7,
"shot_type": "intelligence"
}
}'
# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
-H "Authorization: Bearer YOUR_API_KEY"Python
import time, requests
API_KEY = "YOUR_API_KEY"
HEADERS = {"Authorization": f"Bearer {API_KEY}"}
# 1) Submit
resp = requests.post(
"https://www.namifusion.com/api/v1/marketplace/run/kwaivgi/kling-v2.6/text-to-video",
headers=HEADERS,
json={
"input": {
"prompt": "A futuristic cityscape at sunset with flying cars and glowing neon signs, cinematic style",
"negative_prompt": "Blurry visuals, low-quality textures, unrealistic lighting",
"resolution": "720P",
"aspect_ratio": "16:9",
"duration": 10,
"sound": False,
"cfg_scale": 0.7,
"shot_type": "intelligence"
}
},
)
resp.raise_for_status() # 401/402/429/5xx stop here instead of polling a bad task
task = resp.json()
# 2) Poll until a terminal state (completed / failed / cancelled).
# This model is allowed up to 300s server-side.
deadline = time.time() + 360
while task.get("status") not in ("completed", "failed", "cancelled"):
if time.time() > deadline:
raise TimeoutError(f"still {task.get('status')} — keep the task_uuid and poll later")
time.sleep(3)
poll = requests.get(f"https://www.namifusion.com/api/v1/marketplace/run/tasks/{task['task_uuid']}", headers=HEADERS)
poll.raise_for_status()
task = poll.json()
print(task["status"], task.get("output"))JavaScript
const API_KEY = "YOUR_API_KEY";
const HEADERS = { Authorization: `Bearer ${API_KEY}` };
// 1) Submit
const resp = await fetch("https://www.namifusion.com/api/v1/marketplace/run/kwaivgi/kling-v2.6/text-to-video", {
method: "POST",
headers: { ...HEADERS, "Content-Type": "application/json" },
body: JSON.stringify({
"input": {
"prompt": "A futuristic cityscape at sunset with flying cars and glowing neon signs, cinematic style",
"negative_prompt": "Blurry visuals, low-quality textures, unrealistic lighting",
"resolution": "720P",
"aspect_ratio": "16:9",
"duration": 10,
"sound": false,
"cfg_scale": 0.7,
"shot_type": "intelligence"
}
}),
});
if (!resp.ok) throw new Error(`submit failed: ${resp.status} ${await resp.text()}`);
let task = await resp.json();
// 2) Poll until a terminal state (completed / failed / cancelled).
// This model is allowed up to 300s server-side.
const deadline = Date.now() + 360 * 1000;
while (!["completed", "failed", "cancelled"].includes(task.status)) {
if (Date.now() > deadline) throw new Error(`still ${task.status} — keep the task_uuid and poll later`);
await new Promise((r) => setTimeout(r, 3000));
const poll = await fetch(`https://www.namifusion.com/api/v1/marketplace/run/tasks/${task.task_uuid}`, { headers: HEADERS });
if (!poll.ok) throw new Error(`poll failed: ${poll.status}`);
task = await poll.json();
}
console.log(task.status, task.output);Documentation
Kling V2.6 Text-to-Video API
Seamless Text-to-Video Generation with Audio Integration
Kling V2.6 is a state-of-the-art text-to-video model that delivers cinematic visuals, smooth motion, and native audio generation for ready-to-share clips. With strong prompt adherence and no cold starts, this model is optimized for developers seeking high-quality outputs at affordable pricing.
🚀 Key Features
- Joint Audio-Video Generation: Produces synchronized visuals and sound in a single pass, ensuring cohesive outputs.
- Cinematic Motion: Smooth camera movements and character actions that align perfectly with your prompts.
- Scene-Driven Sound Design: Generates ambient noise, sound effects, and voiceovers tailored to the described scene.
- Prompt Precision: Strong adherence to user prompts, with adjustable flexibility via
cfg_scale. - Ready-to-Use API: No cold starts and fast inference for seamless integration into workflows.
🛠️ Technical Specifications
| Parameter | Type | Default | Range | Description |
|---|---|---|---|---|
| prompt | string | - | - | Positive prompt describing the scene, characters, and audio mood. |
| negative_prompt | string | - | - | Negative prompt specifying elements to exclude (e.g., watermark, noise). |
| cfg_scale | number | 0.5 | 0.00 ~ 1.00 | Guidance strength: higher values increase adherence to the prompt. |
| sound | boolean | true | true/false | Toggles audio generation (voice, ambience, SFX). |
| aspect_ratio | string | 1:1 | 1:1, 9:16, 16:9 | Aspect ratio of the output video. |
| duration | integer | 5 | 5, 10 | Duration of the generated video in seconds. |
💰 Pricing
| Attribute | 720P | 1080P |
|---|---|---|
| Silent | 0.0420 | 0.0700 |
| With Sound | 0.1400 |
💡 Best Use Cases
- Social Media Ads: Create engaging launch teasers with built-in narration and sound design.
- Film Previsualization: Generate animatics or short story beats with synchronized visual and audio timing.
- Product Explainers: Deliver clear, narrated videos showcasing product features and benefits.
- Cinematic Shorts: Produce high-quality posts with music, ambience, and motion from a single prompt.
🔗 Related Models
- Kling V2.6 Motion Control: Enhanced control over camera and character motion.
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