black-forest-labs/flux-2-max/text-to-image

Text to Image

Black Forest Labs FLUX.2 Max is the top FLUX.2 tier, built for the most realistic and precise images in the family, from product shots to campaign art. Choose from six size presets with JPEG or PNG output and a fixed seed for repeatable results.

Try it Get API keyOpenAPI llms.txt

Prompt *

Image size

More settings (2)

Output Format

Seed

ResultExampleSign in to try

$0.07 / megapixel · billed by each image's actual pixels

Example — generated from this input

Ultra-realistic studio product photograph of a sleek matte-black electric motorcycle on a polished concrete floor, dramatic rim lighting tracing its curves, reflections on brushed aluminum and carbon fiber, a soft haze in the background, low three-quarter camera angle, precise material detail and true-to-life shadows. No logos, no text.

Pricing

Unit price $0.07 / megapixel

Billed by the actual pixels of each image; larger sizes and more images cost more. 1024×1024 is about 1 megapixel.

Typically about $0.07 per request at default settings.

Each request temporarily reserves $0.07007; you are charged for actual usage, usually within a minute: any unused amount is released and any usage above it is charged to your balance, even if that takes it below zero; while your balance is below zero, new requests are paused until a top-up covers it.

Failed generations are not charged.

API

Submit generation requests with this model ID.

POST/v1/model-tasks

black-forest-labs/flux-2-max/text-to-image

Request body

{
  "model": "black-forest-labs/flux-2-max/text-to-image",
  "input": {
    "prompt": "Ultra-realistic studio product photograph of a sleek matte-black electric motorcycle on a polished concrete floor, dramatic rim lighting tracing its curves, reflections on brushed aluminum and carbon fiber, a soft haze in the background, low three-quarter camera angle, precise material detail and true-to-life shadows. No logos, no text.",
    "image_size": "landscape_4_3",
    "output_format": "jpeg"
  }
}

Input schema

Parameter	Type	Requirement	Default
prompt	string	Required	—
image_size	object \| string	Optional	landscape_4_3
output_format	string	Optional	jpeg
seed	integer	Optional	—

Response

The API returns a result or a pollable asynchronous task. See the examples and Schema below for the response mode and result fields.

Asynchronous task

Submit response

HTTP 202

/v1/model-tasksapplication/json

{
  "id": "task_example",
  "model": "black-forest-labs/flux-2-max/text-to-image",
  "status": "queued"
}

Status response

HTTP 200

/v1/model-tasks/{id}application/json

{
  "id": "task_example",
  "model": "black-forest-labs/flux-2-max/text-to-image",
  "status": "completed",
  "output": {
    "images": [
      {
        "url": "https://api.musespan.com/v1/model-tasks/task_example/artifacts/0"
      }
    ]
  }
}

File download

HTTP 200

/v1/model-tasks/{id}/artifacts/{index}Generated image (e.g. image/png)

When the task completes, file URLs in output point to this endpoint, numbered from 0. Send the same API key (Authorization header) when downloading.

Error response

HTTP 400

/v1/model-tasksapplication/json

{
  "error": {
    "code": "invalid_input",
    "message": "The input does not match this model's input schema. Check the model's API documentation.",
    "type": "invalid_request_error"
  }
}

Code examples

Async submission returns a task ID. Poll until status is completed, then retrieve the generated content from the result. Get your API key in the console.

# Use a new directory for each new generation. Rerunning here continues this task.
set -eu
test -s model-task-id.txt || python3 -c "import uuid; print(uuid.uuid4())" > model-task-id.txt
REQUEST_ID=$(cat model-task-id.txt)
# Idempotent: resending the same bytes with the same ID never charges twice.
curl --fail-with-body --retry 3 --retry-connrefused --request POST 'https://api.musespan.com/v1/model-tasks' \
  --header "Authorization: Bearer $MUSESPAN_API_KEY" \
  --header "X-Request-Id: $REQUEST_ID" \
  --header "Content-Type: application/json" \
  --data '{"model":"black-forest-labs/flux-2-max/text-to-image","input":{"prompt":"Ultra-realistic studio product photograph of a sleek matte-black electric motorcycle on a polished concrete floor, dramatic rim lighting tracing its curves, reflections on brushed aluminum and carbon fiber, a soft haze in the background, low three-quarter camera angle, precise material detail and true-to-life shadows. No logos, no text.","image_size":"landscape_4_3","output_format":"jpeg"}}'
# Poll every 5 seconds for up to 25 minutes until status is completed or failed.
# Still queued (with queue_position) 5 minutes after submission: failed with queue_timeout, not charged.
# No result 15 minutes after acceptance (or no confirmation 15 minutes after submission): failed with generation_timeout, not charged.
# Any failure is final: generate again in a new directory (a new X-Request-Id).
# A 404 means the POST did not arrive: rerun this script to resend it with the same ID.
curl --fail-with-body 'https://api.musespan.com/v1/model-tasks/'"$REQUEST_ID"'' --header "Authorization: Bearer $MUSESPAN_API_KEY"