FLUX 1.1 [pro]

Authentication

authorization string required

All APIs require authentication via Bearer Token

Get API Key:

Visit API Key Management Page to get your API Key

Usage:

Add to request header:

Authorization: Bearer YOUR_API_KEY

Parameters

model string required

Model ID to use for the request

Options: flux_pro_11

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prompt string required

Text description of the desired image

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image_prompt string

Image Base64 for image-guided generation

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width integer

Image width, must be a multiple of 32

Range: 256 - 1440

Default: 1024

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height integer

Image height, must be a multiple of 32

Range: 256 - 1440

Default: 1024

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prompt_upsampling boolean

Whether to perform upsampling on the prompt. If activated, will automatically modify prompt to achieve more creative generation

Default: false

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seed integer

Random seed for result reproducibility, accepts any integer

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safety_tolerance integer

Content moderation level. Values range from 0 (strictest) to 6 (more lenient)

Range: 0 - 6

Default: 2

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output_format string

Output format

Options: jpeg, png

Default: jpeg

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Polling

Since image generation takes time, you need to poll the task status after creation

The initial response returns the task ID and initial status. The actual generation results must be obtained through polling the task status endpoint

Response Format

error object

Error information, only present when status is failed

code string

Error code

message string

Detailed error message

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output array

Generation results, only present when status is completed

content array

List of generated content

type string

Resource type, e.g., image

url string

Generated content URL

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usage object

Usage statistics, only present when status is completed

cost string

Total cost in USD

discount number

Discount amount

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metadata object

Metadata information

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Error Codes

Error information is provided in the error field when status is failed