Kwaivgi Kling V1.6 T2V Standard API Documentation

Kwaivgi Kling V1.6 T2V Standard API Documentation

Playground

Kling v1.6 boosts image-to-video quality by 195% over v1.5, with improved prompt understanding and richer physics-driven visual effects. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Kling V1.6 Text-to-Video Standard is Kuaishou’s reliable text-to-video generation model that creates high-quality videos from text descriptions. Generate smooth, cinematic videos with natural motion and excellent visual fidelity — perfect for content creators and marketers.

Why It Stands Out

• High-quality generation: Produces detailed videos with natural motion and visual clarity.
• Prompt Enhancer: Built-in AI-powered prompt optimization for better results.
• Negative prompt support: Exclude unwanted elements for cleaner outputs.
• Flexible aspect ratios: Choose from 16:9, 9:16, or 1:1 to fit any platform.
• Flexible duration: Generate 5 or 10 second videos.
• Guidance control: Adjust how closely the output follows your prompt.

Parameters

Supported Aspect Ratios

How to Use

1. Write a prompt describing the scene, action, and style you want. Use the Prompt Enhancer for AI-assisted optimization.
2. Select aspect ratio — choose the format that fits your platform.
3. Add a negative prompt (optional) — specify elements to exclude.
4. Adjust guidance scale — higher values follow prompts more strictly.
5. Set duration — choose 5 or 10 seconds.
6. Click Run and wait for your video to generate.
7. Preview and download the result.

Best Use Cases

• Social Media Content — Create platform-optimized videos for TikTok, YouTube, Instagram.
• Marketing & Advertising — Produce promotional videos and ad creatives.
• Storytelling & Film — Generate cinematic scenes for short films and narratives.
• Fantasy & Concept Art — Bring magical and fantastical scenes to life.
• Music Videos — Create visual content for songs and audio tracks.

Pricing

Pro Tips for Best Quality

• Be detailed in your prompt — describe subject, action, environment, lighting, and mood.
• Include style keywords like “magical realism,” “cinematic,” or “mystical tone.”
• Use negative prompts to reduce artifacts like blur or distortion.
• Choose the right aspect ratio: 16:9 for widescreen, 9:16 for mobile, 1:1 for social squares.
• Lower guidance scale (0.3–0.5) for more natural results, higher for strict prompt adherence.

Notes

• Processing time varies based on duration and current queue load.
• Please ensure your prompts comply with content guidelines.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result

set -euo pipefail

export WAVESPEED_API_KEY="your-api-key"

REQUEST_BODY=$(cat <<'JSON'
{
  "prompt": "A cinematic ocean wave at sunrise, highly detailed",
  "aspect_ratio": "16:9",
  "guidance_scale": 0.5,
  "duration": 5
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/kwaivgi/kling-v1.6-t2v-standard" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}")

TASK=$(printf '%s' "${SUBMIT_RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "${TASK}" | jq -r '.id // empty')
if [ -z "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL=$(printf '%s' "${TASK}" | jq -r '.urls.get // empty')
if [ -z "${RESULT_URL}" ]; then RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"; fi

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body \
    "${RESULT_URL}" \
    -H "Authorization: Bearer ${WAVESPEED_API_KEY}")
  RESULT=$(printf '%s' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    created|processing) sleep 2 ;;
    *) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

Response Parameters

Result Request Parameters

Result Response Parameters