Runware Seedance alternative: the KreatorFlow API

1. Send the job to POST https://kreatorflow.ai/v1/videos instead of POST https://api.runware.ai/v1 with a [{ "taskType": "videoInference" }] task array.
2. Authenticate with Authorization: Bearer $KREATORFLOW_API_KEY, a key from the developer console, instead of Authorization: Bearer $RUNWARE_API_KEY.
3. Name the model in the body: "kreator-video-seedance-2" for Seedance 2.0, "kreator-video-seedance-2-fast" for Seedance 2.0 Fast, "kreator-video-seedance-2-5" for Seedance 2.5.
4. Send one JSON object instead of a task array: no taskType or taskUUID, prompt instead of positivePrompt, resolution and aspect_ratio instead of width and height, and generate_audio instead of settings.audio.
5. Use a clip length of 4, 5, 6, 8, 10, 12 and 15 seconds.
6. Send generate_audio: true if you want audio: it is on by default there and off by default here.
7. Replace a "getResponse" task with the taskUUID and webhookURL with webhook_url (signed with X-KreatorFlow-Signature) or GET /v1/jobs/{job_id}, and add an Idempotency-Key header so a retried request returns the same job.

The same job on the KreatorFlow API

curl https://kreatorflow.ai/v1/videos \
  -H "Authorization: Bearer $KREATORFLOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: launch-teaser-001" \
  -d '{
    "model": "kreator-video-seedance-2",
    "prompt": "slow dolly in on a glass perfume bottle, soft studio light",
    "duration": 5,
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "generate_audio": true,
    "webhook_url": "https://example.com/hooks/kreatorflow"
  }'

Runware's request format read on its API docs on 18 October 2026: runware.ai/docs/models/bytedance-seedance-2-0, runware.ai/docs/getting-started/how-to-connect, runware.ai/docs/platform/task-polling. Read the docs