FLUX.2 [max]

Third-party

FLUX.2 [max] is Black Forest Labs' highest-quality image model — top editing consistency, strongest prompt following, and grounding search for visualizations of real-time information.

Model Info
Terms and License	link ↗
More information	link ↗
Pricing	View pricing in the Cloudflare dashboard ↗

Usage

const response = await env.AI.run(
  'black-forest-labs/flux-2-max',
  {
    prompt:
      'A cat on its back legs running like a human is holding a big silver fish with its arms. The cat is running away from the shop owner and has a panicked look on his face. The scene is situated in a crowded market.',
    height: 2048,
    width: 1440,
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "black-forest-labs/flux-2-max",
  "input": {
    "prompt": "A cat on its back legs running like a human is holding a big silver fish with its arms. The cat is running away from the shop owner and has a panicked look on his face. The scene is situated in a crowded market.",
    "height": 2048,
    "width": 1440
  }
}'

{
  "state": "Completed",
  "result": {
    "image": "https://examples.aig.cloudflare.com/black-forest-labs/flux-2-max/high-resolution-scene.jpeg"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Examples

Hex Color Control — Exact color control via hex codes — useful for brand-consistent imagery

const response = await env.AI.run(
  'black-forest-labs/flux-2-max',
  {
    prompt:
      'A vase on a table in living room, the color of the vase is a gradient of color, starting with color #02eb3c and finishing with color #edfa3c. The flowers inside the vase have the color #ff0088',
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "black-forest-labs/flux-2-max",
  "input": {
    "prompt": "A vase on a table in living room, the color of the vase is a gradient of color, starting with color #02eb3c and finishing with color #edfa3c. The flowers inside the vase have the color #ff0088"
  }
}'

{
  "state": "Completed",
  "result": {
    "image": "https://examples.aig.cloudflare.com/black-forest-labs/flux-2-max/hex-color-control.jpeg"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Image Editing — Single-reference image editing — relight or restage a product photo

const response = await env.AI.run(
  'black-forest-labs/flux-2-max',
  {
    prompt: 'Place this product onto a minimalist marble countertop with soft window light',
    input_images: [
      'https://replicate.delivery/xezq/jCypj4MeXYUiRyq7nfgm8z1OvFZF81wh4FznutDsZOuJz0YWA/tmp1iukn307.jpg',
    ],
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "black-forest-labs/flux-2-max",
  "input": {
    "prompt": "Place this product onto a minimalist marble countertop with soft window light",
    "input_images": [
      "https://replicate.delivery/xezq/jCypj4MeXYUiRyq7nfgm8z1OvFZF81wh4FznutDsZOuJz0YWA/tmp1iukn307.jpg"
    ]
  }
}'

{
  "state": "Completed",
  "result": {
    "image": "https://examples.aig.cloudflare.com/black-forest-labs/flux-2-max/image-editing.jpeg"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}

Parameters

prompt

stringrequiredText prompt for image generation or editing.

seed

integerminimum: -9007199254740991maximum: 9007199254740991Optional seed for reproducible generation.

width

integerminimum: 64maximum: 9007199254740991Width of the generated image in pixels (minimum 64). Omit to let BFL pick.

height

integerminimum: 64maximum: 9007199254740991Height of the generated image in pixels (minimum 64). Omit to let BFL pick.

safety_tolerance

integerminimum: 0maximum: 5Tolerance for input/output moderation. 0 is the strictest, 5 the most permissive. Defaults to 2.

output_format

stringenum: jpeg, png, webpOutput image format. Defaults to jpeg.

▶input_images[]

arraymaxItems: 8Up to 8 reference images for editing or multi-image composition. Each entry is an HTTPS URL or a data:image/...;base64,... URI.

image

stringformat: uriURL to the generated image

API Schemas (Raw)

Input

Output