Kwaivgi Kling V1.6 I2V Pro

Kwaivgi Kling V1.6 I2V Pro

Playground

Kling v1.6 i2v Pro boosts image-to-video output 195% over Kling 1.5 with improved prompt understanding, physics and visual effects for realistic output. Ready-to-use REST inference API, no coldstarts, affordable pricing.

Features

Kling v1.6 I2V Pro is an image-to-video (I2V) model that turns a reference image into a short, coherent video clip driven by your prompt. It’s designed for stable motion, strong subject consistency, and cinematic camera control, making it a solid choice for product shots, character shots, and ad-style sequences.

What it’s good at

• Image-to-Video (I2V): animate a single input image into a short clip
• Prompt-driven motion: control action, pacing, and camera movement via text
• Subject consistency: keep the main subject recognizable across frames
• Cinematic framing: works well with “director-style” prompts (shots, lenses, camera moves)

Inputs

• Prompt (required): describe subject, motion, environment, lighting, and camera
• Negative prompt (optional): specify what to avoid (e.g., blur, jitter, distortion)
• Image (required): the starting reference image
• End image (optional): guide the clip to land closer to a target final frame

Key parameters

• Duration: 5s (and other supported durations depending on the deployment)

• Guidance scale: controls how strictly the generation follows the prompt

• Lower: more natural/loose motion

• Higher: stronger prompt adherence (can reduce naturalness if pushed too high)

Prompting tips (I2V)

• Write like a director: Subject + Action + Scene + Camera + Style
• Add motion verbs and pacing words: turns, steps forward, spins, slowly, rapidly
• Specify the camera: close-up, wide shot, dolly-in, orbit, handheld, slow pan
• Use the end image when you need a clear “arrival” (pose change, composition shift, scene progression)
• Keep negative prompts practical: blurry, jittery, flicker, distorted, low quality, inconsistent motion

Common use cases

• Ad creatives: animate a product/portrait image into multiple short variants fast
• Character motion tests: generate subtle facial/body motion and camera movement
• Scene continuation: use an end image to guide story progression within a short clip
• Style exploration: try different cinematography directions without re-shooting assets

Pricing

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",
  "image": "https://interactive-examples.mdn.mozilla.net/media/cc0-images/painted-hand-298-332.jpg",
  "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-i2v-pro" \
  -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