Black Forest Labs · AI Image Generation

Flux AI Image Generation API

Based on Black Forest Labs' Flux series models, quickly generate and edit high-quality AI images through a unified API, with support for 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 Integration

Flux Models Available

Modes: Generation & Editing

$0.023

Starting Per Image

0.5

Free Credits

Core Features

Covering the complete image generation and editing workflow, with a variety of Flux models ranging from basic to professional.

🖼️

High-Quality Text-to-Image

Generate high-resolution images from natural language descriptions, with support for multiple models including Flux Dev, Pro, Kontext, and Flux 2 to meet different quality requirements.

✏️

Kontext Image Editing

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

🔄

Asynchronous Task Architecture

After submitting a generation request, retrieve results by polling with the Task ID. The polling API is completely free, making it ideal for batch and background processing.

📐

Flexible Parameter Control

Supports customizable parameters such as width, height, seed, and quantity, enabling precise control over generation results to meet production-grade image creation needs.

Generate images with a single request

Use the standard RESTful API with Bearer Token authentication to 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
  }'

Get started in 3 quick steps

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

Register and get an API Key

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

Call the image generation API

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

Poll for results

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

What is Flux suitable for?

Multiple application scenarios to meet creative design and production-grade image needs.

🎨

Creative design

Quickly generate concept art, illustrations, and design assets to accelerate creative workflows.

🛒

E-commerce product images

Generate product showcase images and lifestyle images in batches to reduce photography costs.

📱

Social media content

Quickly create high-quality visual content to improve social media operation efficiency.

🎮

Games and entertainment

Generate game characters and scene concept art to support game development and content creation.

📝

Image editing

Use the Kontext model for localized editing to modify specific elements in images.

🏢

Enterprise marketing

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

Flux API Pricing

Charged by the number of images generated; prices depend on the model. The polling API 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 · Great value
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	Most powerful editing capabilities

For multiple images, charges are multiplied by the count value · The task status polling API /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, with a lower price ($0.023/image). Flux Pro and the latest Flux 2 series are production-grade models with higher image quality and richer details, recommended for official products.

What is the Kontext model for?›

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

Is polling task status billed?›

No. The /flux/tasks endpoint is completely free; charges apply only when submitting generation requests.

Which image sizes are supported?›

Custom width and height parameters are supported. Common sizes include 1024×1024, 1024×1792, and 1792×1024. The Kontext and Flux 2 series control output by image aspect ratio (such as 1:1, 16:9, and 9:16).

Can images be generated in batches?›

Yes. Use the count parameter to specify the number of images generated per request; charges are calculated as a multiple of the quantity.

flux-2-pro

Overview

Model facts

Quickstart

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