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POST
  1. After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
  2. Regardless of whether callback_url is provided, you can retrieve the response result through the unified Query Task Status endpoint.

Flux 2 Image Generation

FLUX.2 is a 32 billion parameter image generation and editing model from Black Forest Labs. It combines text-to-image and multi-image editing in a single architecture, delivering photoreal images with clean typography at resolutions up to 2K. Supports referencing up to 8 images simultaneously with excellent character, product, and style consistency.

Available Models

  • flux-2-pro - High-fidelity text-to-image generation for production deployments
  • flux-2-pro-edit - Advanced multi-reference image editing with up to 8 input images
  • flux-2-flex - Adjustable speed vs. quality balance for flexible workflows
  • flux-2-flex-edit - Flexible image editing with multi-reference support

Authorizations

Authorization
string
header
required

All API endpoints require Bearer Token authentication

Get your API Key:

Visit the API Key Management Page to get your API Key

Add it to the request header:

Body

application/json
model
enum<string>
required

Flux 2 model identifier

Available options:
flux-2-pro,
flux-2-pro-edit,
flux-2-flex,
flux-2-flex-edit
input
object
required

Input parameters for generation

callback_url
string<uri>

Webhook callback URL for result notifications

Example:

"https://your-domain.com/callback"

Response

200 - application/json

Task submitted successfully

code
integer
required

HTTP status code

Example:

200

data
object
required