Kling 2.1 Master

curl -X POST "https://api.hedra.com/v3/models/kling-21-master" \
  -H "Authorization: Key $HEDRA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "aspect_ratio": "1:1",
    "resolution": "720p",
    "duration_ms": 10000,
    "cfg_scale": 0
  }
}'