Blackforestlabs FLUX 3 Draft Image to Video API | Pricing & Docs

blackforestlabs/flux-3/image-to-video/draft

FLUX 3 Draft Image to Video turns a still into a fast 720p motion draft, with a reusable cache for later full-quality enhancement.

1. Get started

Use RunComfy's API to run blackforestlabs/flux-3/image-to-video/draft. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/image-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png",
    "prompt": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/image-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png",
    "prompt": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server-side fetches (no login/cookies required) and isn't rate-limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre-signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "image_url",
    "prompt"
  ],
  "properties": {
    "image_url": {
      "title": "Image URL",
      "description": "URL or data URI of the opening keyframe image.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png"
    },
    "prompt": {
      "title": "Prompt",
      "description": "The text prompt describing the draft video.",
      "type": "string",
      "default": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "Aspect ratio of the generated draft. auto lets the model choose.",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "auto"
    },
    "duration": {
      "title": "Duration",
      "description": "Draft duration in whole seconds from 5 through 20, or auto.",
      "type": "string",
      "enum": [
        "auto",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20"
      ],
      "default": "auto"
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "Whether to generate audio for the draft video.",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "Safety Tolerance",
      "description": "The safety tolerance level for the generated video. 0 is the strictest and 4 is the most permissive.",
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 2
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

1. Get started

Use RunComfy's API to run blackforestlabs/flux-3/image-to-video/draft. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/image-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png",
    "prompt": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
  }'

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-3/image-to-video/draft \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png",
    "prompt": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "image_url",
    "prompt"
  ],
  "properties": {
    "image_url": {
      "title": "Image URL",
      "description": "URL or data URI of the opening keyframe image.",
      "type": "string",
      "default": "https://playgrounds-storage-public.runcomfy.net/tools/7406/media-files/input-1-1.png"
    },
    "prompt": {
      "title": "Prompt",
      "description": "The text prompt describing the draft video.",
      "type": "string",
      "default": "Slow cinematic push-in as the potter's hands reshape the spinning clay on the wheel, fine slurry catching warm workshop light, one continuous unbroken shot. Soft wheel hum and distant kiln crackle."
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "Aspect ratio of the generated draft. auto lets the model choose.",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "auto"
    },
    "duration": {
      "title": "Duration",
      "description": "Draft duration in whole seconds from 5 through 20, or auto.",
      "type": "string",
      "enum": [
        "auto",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20"
      ],
      "default": "auto"
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "Whether to generate audio for the draft video.",
      "type": "boolean",
      "default": true
    },
    "safety_tolerance": {
      "title": "Safety Tolerance",
      "description": "The safety tolerance level for the generated video. 0 is the strictest and 4 is the most permissive.",
      "type": "integer",
      "minimum": 0,
      "maximum": 4,
      "default": 2
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

FLUX 3 Draft Image to Video turns a still into a fast 720p motion draft, with a reusable cache for later full-quality enhancement.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

FLUX 3 Draft Image to Video turns a still into a fast 720p motion draft, with a reusable cache for later full-quality enhancement.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

FLUX 3 Draft Image to Video: Fast Still Animation Drafts on Models and API | RunComfy

FLUX 3 Draft Image to Video turns a still into a fast 720p motion draft, with a reusable cache for later full-quality enhancement.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

FLUX 3 Draft Image to Video: Fast Still Animation Drafts on Models and API | RunComfy

FLUX 3 Draft Image to Video turns a still into a fast 720p motion draft, with a reusable cache for later full-quality enhancement.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema