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.
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 -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.
Explore More AI Image Services
Ace Data Cloud provides a variety of AI image generation and editing services
Start Using the Flux API Now
Access the full Flux model lineup through a unified interface and easily integrate AI image generation into your product.