FLUX 3 Draft — Text To Video

Create FLUX 3 Draft — Text To Video

curl --request POST \
  --url https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "input": {
    "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": false,
    "safety_tolerance": 2
  }
}
'

import requests

url = "https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video"

payload = { "input": {
        "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
        "duration": 5,
        "aspect_ratio": "16:9",
        "generate_audio": False,
        "safety_tolerance": 2
    } }
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    input: {
      prompt: 'Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide',
      duration: 5,
      aspect_ratio: '16:9',
      generate_audio: false,
      safety_tolerance: 2
    }
  })
};

fetch('https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "run_id": "<string>",
  "endpoint": "<string>",
  "model": "<string>",
  "capability": "<string>",
  "mode": "<string>",
  "status": "queued",
  "created_at": "2023-11-07T05:31:56Z",
  "output": {},
  "error": {
    "type": "<string>",
    "code": 123,
    "message": "<string>"
  },
  "billing": {
    "amount": "<string>",
    "currency": "usd"
  },
  "started_at": "2023-11-07T05:31:56Z",
  "completed_at": "2023-11-07T05:31:56Z",
  "elapsed_ms": 123
}

POST

run

blackforestlabs

flux-3

draft

text-to-video

Create FLUX 3 Draft — Text To Video

curl --request POST \
  --url https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "input": {
    "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": false,
    "safety_tolerance": 2
  }
}
'

import requests

url = "https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video"

payload = { "input": {
        "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
        "duration": 5,
        "aspect_ratio": "16:9",
        "generate_audio": False,
        "safety_tolerance": 2
    } }
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    input: {
      prompt: 'Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide',
      duration: 5,
      aspect_ratio: '16:9',
      generate_audio: false,
      safety_tolerance: 2
    }
  })
};

fetch('https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "run_id": "<string>",
  "endpoint": "<string>",
  "model": "<string>",
  "capability": "<string>",
  "mode": "<string>",
  "status": "queued",
  "created_at": "2023-11-07T05:31:56Z",
  "output": {},
  "error": {
    "type": "<string>",
    "code": 123,
    "message": "<string>"
  },
  "billing": {
    "amount": "<string>",
    "currency": "usd"
  },
  "started_at": "2023-11-07T05:31:56Z",
  "completed_at": "2023-11-07T05:31:56Z",
  "elapsed_ms": 123
}

Overview

Black Forest Labs FLUX 3 — first BFL video model, up to 20s with audio; text / image / first-last / keyframes / extend, plus Draft. Optimized for text to video via apisale.

Docs = API contract + Try it (snapshot). Explore = browser playground. Model page = product examples.

Endpoint

POST https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video


Model slug	`blackforestlabs/flux-3/draft/text-to-video`
Category	Text to Video (`text-to-video`)
Lab	Blackforestlabs
Tier	Draft
Mode	async

Pricing

From $0.042/sec apisale price is 30% below the vendor’s official list price.

Tier	Unit	Official price	apisale price
Draft 720p	second	$0.060	$0.042

Official price = vendor list price. apisale price = what you pay through apisale.

Request

{‌
  "input": {‌
    "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": false,
    "safety_tolerance": 2
  }
}

Parameters

Fields marked * are required. Use Authorization: Key YOUR_API_KEY for REST.

string

required

Text prompt describing the draft video.

string

Duration in seconds (5-20), or auto to let the model choose. Default: auto Values: auto, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

string

Aspect ratio; auto lets the model choose. Default: auto Values: auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16

boolean

Whether to generate audio for the video. Default: true

number

0 is the strictest, 4 the most permissive. Default: 2 Range: 0 – 4

string

Optional HTTPS webhook when the run reaches a terminal state.

boolean

Block until completion (same Run response shape).

Input schema

{‌
  "params": {‌
    "prompt": {‌
      "type": "string",
      "required": true,
      "description": "Text prompt describing the draft video."
    },
    "duration": {‌
      "type": "enum",
      "values": [
        "auto",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20"
      ],
      "default": "auto",
      "description": "Duration in seconds (5-20), or auto to let the model choose."
    },
    "aspect_ratio": {‌
      "type": "enum",
      "values": [
        "auto",
        "21:9",
        "2:1",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "auto",
      "description": "Aspect ratio; auto lets the model choose."
    },
    "generate_audio": {‌
      "type": "bool",
      "default": true,
      "description": "Whether to generate audio for the video."
    },
    "safety_tolerance": {‌
      "max": 4,
      "min": 0,
      "type": "int",
      "default": 2,
      "description": "0 is the strictest, 4 the most permissive."
    }
  }
}

Submit response

Returns a Run with run_id. Poll with GET /v1/runs/{run_id} or use Try it above.

string

required

Unique run ID — save for polling and webhooks.

string

required

queued (async) or terminal state for sync runs.

object

Result when status is succeeded — see Output schema below.

Example (async submit)

{
  "run_id": "run_550e8400-e29b-41d4-a716-446655440000",
  "endpoint": "blackforestlabs/flux-3/draft/text-to-video",
  "model": "text-to-video",
  "capability": "video",
  "mode": "text-to-video",
  "status": "queued",
  "output": null,
  "error": null,
  "billing": null,
  "created_at": "2026-06-27T12:00:00.000Z",
  "started_at": null,
  "completed_at": null,
  "elapsed_ms": null
}

Full lifecycle: Runs lifecycle.

Output

When status is succeeded, output follows this schema:

Output schema

{‌
  "type": "object",
  "example": {‌
    "videos": [
      {‌
        "url": "https://example.com/out.mp4",
        "content_type": "video/mp4"
      }
    ]
  },
  "required": [
    "videos"
  ],
  "properties": {‌
    "videos": {‌
      "type": "array",
      "items": {‌
        "type": "object",
        "required": [
          "url"
        ],
        "properties": {‌
          "url": {‌
            "type": "string"
          },
          "file_name": {‌
            "type": "string"
          },
          "content_type": {‌
            "type": "string"
          }
        }
      }
    },
    "draft_cache": {‌
      "type": "object",
      "properties": {‌
        "url": {‌
          "type": "string"
        }
      },
      "description": "Encrypted draft cache bundle; pass its url to flux-3/draft-enhance for a full-quality render."
    }
  },
  "description": "Succeeded task output: draft video URL plus optional draft cache bundle."
}

Example

curl -X POST "https://api.apisale.ai/v1/run/blackforestlabs/flux-3/draft/text-to-video" \
  -H "Authorization: Key YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": false,
    "safety_tolerance": 2
  }
}'

Authorizations

Authorization

string

header

required

Key sk-... (native REST) or Bearer sk-... (vendor SDKs)

Body

application/json

input

object

required

Show child attributes

Example:

{
  "prompt": "Quick cinematic sketch: runner across crimson dunes at sunrise, long shadow, epic wide",
  "duration": 5,
  "aspect_ratio": "16:9",
  "generate_audio": false,
  "safety_tolerance": 2
}

webhook_url

string<uri>

sync

boolean

default:false

Response

201 - application/json

Run accepted

run_id

string

required

Unique run identifier

endpoint

string

required

Model slug

model

string

required

capability

string

required

mode

string

required

status

enum<string>

required

Available options:

queued,

processing,

succeeded,

failed,

timeout,

cancelled

created_at

string<date-time>

required

output

object | null

error

object | null

Show child attributes

billing

object | null

Show child attributes

started_at

string<date-time> | null

completed_at

string<date-time> | null

elapsed_ms

number | null

Get Started

Overview

Image

Video

Audio

Model APIs

Official SDK compatibility

Platform API Reference

FLUX 3 Draft — Text To Video

Overview

Endpoint

Pricing

Request

Parameters

Submit response

Example (async submit)

Output

Example

Authorizations

Body

Response

​Overview

​Endpoint

​Pricing

​Request

​Parameters

​Submit response

​Example (async submit)

​Output

​Example

​Related

Authorizations

Body

Response

Overview

Endpoint

Pricing

Request

Parameters

Submit response

Example (async submit)

Output

Example

Related