Black Forest Labs · AI Image Generation

Flux AI Image Generation API

Based on the Flux series models from Black Forest Labs, quickly generate and edit high-quality AI images through a unified API, supporting Flux Dev, Pro, Kontext, and the latest Flux 2 series.

📄 View Documentation 💰 View Pricing

🎨 Text to Image & Image to Image ⚡ Multiple Models Available 🔗 Unified API Access

Flux Models Available

Operation Modes: Generate & Edit

$0.023

Minimum per Image

0.5

Free Quota

Core Features

Covers the entire process of image generation and editing, supporting various Flux models from basic to professional.

🖼️

High-Quality Text to Image

Generate high-resolution images from natural language descriptions, supporting various models including Flux Dev, Pro, Kontext, and Flux 2 to meet different precision needs.

✏️

Kontext Image Editing

Use Flux Kontext Pro/Max models for context-aware image editing, accurately modifying local details of images while maintaining overall consistency.

🔄

Asynchronous Task Architecture

Poll results using Task ID after submitting generation requests; the polling interface is completely free, suitable for batch and background processing scenarios.

📐

Flexible Parameter Control

Supports custom width, height, seed, quantity, and other parameters to precisely control generation results, meeting product-level image production needs.

One request to generate an image

Use the standard RESTful API, authenticate with Bearer Token, and quickly submit image generation tasks.

cURL

curl -X POST "https://api.acedata.cloud/flux/images" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-pro",
    "prompt": "A futuristic cityscape at sunset",
    "width": 1024,
    "height": 1024,
    "count": 1
  }'

Quick Start in 3 Steps

From registration to generating the first image, it only takes a few minutes.

Register and Get API Key

Create an account on the platform and go to the console to generate the API key.

Call the Image Generation API

Use the /flux/images endpoint to submit a generation request and get the Task ID.

Poll for Results

Query the task status through /flux/tasks to get the generated image.

What is Flux Suitable For?

Various application scenarios to meet creative design and product-level image needs.

🎨

Creative Design

Quickly generate concept images, illustrations, and design materials to accelerate the creative workflow.

🛒

E-commerce Product Images

Batch generate product display images and scene images to reduce shooting costs.

📱

Social Media Content

Quickly produce high-quality graphic content to enhance social media operation efficiency.

🎮

Games and Entertainment

Generate game characters and scene concept images to assist game development and content creation.

📝

Image Editing

Use the Kontext model for local editing to modify specific elements in the image.

🏢

Corporate Marketing

Quickly produce advertising ideas, marketing materials, and brand visual content.

Flux API Pricing

Billing is based on the number of images generated, with prices depending on the model. The polling interface is completely free.

Model	Price per Image	Description
Flux Dev	$0.023	For development and testing
Flux Pro	$0.030	Professional-grade generation
Flux 2 Pro	$0.027	Recommended · Next generation · Cost-effective
Flux 2 Flex	$0.045	Next generation · Flexible generation
Flux 2 Max	$0.063	Next generation · Highest quality
Flux Kontext Pro	$0.045	Recommended · Context editing
Flux Kontext Max	$0.075	Strongest editing capabilities

Billing is based on multiples of count when generating multiple images · The polling task status interface /flux/tasks is completely free

Frequently Asked Questions

Common questions about using the Flux API

What is the difference between Flux Dev and Flux Pro?›

Flux Dev is a model for development and testing, priced lower ($0.023/image). Flux Pro and the latest Flux 2 series are production-grade models with higher image quality and more detail, recommended for official products.

What is the Kontext model for?›

The Flux Kontext model supports context-aware image editing—input an existing image along with text instructions to precisely modify specific parts of the image without affecting other areas.

Is polling task status charged?›

No charge. The /flux/tasks interface is completely free, and charges only apply when submitting a generation request.

What image sizes are supported?›

Custom width and height parameters are supported. Common sizes include 1024×1024, 1024×1792, 1792×1024, etc. Kontext and Flux 2 series control output based on image ratios (e.g., 1:1, 16:9, 9:16).

Can images be generated in bulk?›

Yes. Specify the number of images to generate per request using the count parameter, with costs calculated based on the quantity.

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