FLUX.1-dev API, Fine-Tuning, Deployment

black-forest-labs/FLUX.1-dev

FLUX.1 [dev] is a 12 billion parameter rectified flow transformer capable of generating images from text descriptions. It offers cutting-edge output quality, second only to their state-of-the-art model FLUX.1 [pro]. The model features competitive prompt following, matching the performance of closed source alternatives. Trained using guidance distillation, FLUX.1 [dev] is more efficient. Open weights are provided to drive new scientific research and empower artists to develop innovative workflows

API Usage

cURL

Python

JavaScript

curl --request POST \
  --url https://api.siliconflow.com/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "black-forest-labs/FLUX.1-dev",
  "prompt": "an island near sea, with seagulls, moon shining over the sea, light house, boats int he background, fish flying over the sea",
  "image_size": "1024x1024",
  "prompt_enhancement": false,
  "num_inference_steps": 20
}'

Details

Model Provider

black-forest-labs

Type

image

Sub Type

text-to-image

Publish Time

Aug 1, 2024

Price

0.014

/ Image

FLUX 1.1 [pro]

FLUX1.1 Pro is an enhanced text-to-image model built on the FLUX.1 architecture, offering improved composition, detail, and rendering speed. With better visual consistency and artistic fidelity, it's suitable for illustration, creative content generation, and e-commerce visual assets—delivering diverse styles with strong prompt alignment.

text-to-image

FLUX 1.1 [pro] Ultra

FLUX1.1 Pro Ultra is the high-resolution version of FLUX1.1 Pro, capable of generating images up to 4 megapixels (2K resolution). It improves photo realism and prompt controllability for advanced use cases. The Ultra mode is optimized for composition and precision, while Raw mode prioritizes natural textures and realism—ideal for commercial visual production, art direction, and realistic concept rendering.

text-to-image

FLUX.1-dev

12B

image-to-image

FLUX.1-Kontext-dev

FLUX.1 Kontext [dev] is a 12 billion parameter image editing model developed by Black Forest Labs. Based on advanced Flow Matching technology, it functions as a diffusion transformer capable of precise image editing based on text instructions. The model's core feature is its powerful contextual understanding, allowing it to process both text and image inputs simultaneously and maintain a high degree of consistency for characters, styles, and objects over multiple successive edits with minimal visual drift. As an open-weight model, FLUX.1 Kontext [dev] aims to drive new scientific research and empower developers and artists with innovative workflows. Users can leverage it for various tasks, including style transfer, object modification, background swapping, and even text editing

12B

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