FLUX.1 [dev] is a state-of-the-art image generation model that utilizes a 12 billion parameter rectified flow transformer architecture. It is designed to generate high-quality images from textual descriptions, making it a powerful tool for developers and creatives.
FLUX.1 [dev] is ideal for developers and artists looking to create unique visual content from text prompts. It can be used in various applications, including graphic design, advertising, content creation, and research.
API Pricing:
The model primarily supports English but can handle prompts in multiple languages to varying degrees.
FLUX.1 [dev] employs a rectified flow transformer architecture, which integrates multimodal and parallel diffusion transformer blocks. This design allows for efficient processing and generation of images from text.
The model was trained on a diverse dataset obtained from various sources, including public image repositories and curated collections, ensuring a broad representation of visual styles and contexts.
The training dataset encompasses millions of images, allowing the model to learn from a wide range of scenarios and styles, enhancing its ability to generate diverse outputs.
The model's knowledge is current as of August 2024, reflecting the latest advancements in AI and image generation.
While efforts were made to include diverse data, the model may still reflect existing societal biases present in the training data. Continuous evaluation and updates are necessary to mitigate these biases.
Key performance metrics for FLUX.1 [dev] include:
Code Samples/SDK:
Image to image
API Documentation: Link
The development of FLUX.1 [dev] was conducted with ethical considerations in mind. The model is not intended for generating harmful or misleading content, and users are expected to adhere to responsible usage guidelines.
Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.
import requests r = requests.post( "https://api.aimlapi.com/v1/images/generations", headers={"Authorization": "Bearer " + AIMLAPI_KEY}, json={ "model": "flux/dev", "prompt": "A cat holding a sign that says hello" }, ) print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/images/generations", { method: "POST", headers: { Authorization: `Bearer ${process.env.AIMLAPI_KEY}`, "Content-Type": "application/json", }, body: JSON.stringify({ "model": "flux/dev", "prompt": "A cat holding a sign that says hello" }), }); console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/images/generations \ -H "Authorization: Bearer $AIMLAPI_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"flux/dev","prompt":"A cat holding a sign that says hello"}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
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| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Flux dev This page | Image generation at scale | |||
| Image generation at scale | ||||
| Image generation at scale | ||||
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| Image generation at scale |
Flux dev takes image, text as input and returns image.
Flux dev is priced at $0.0325 / MP (variable).
Flux dev is billed per generation — a fixed charge per output rather than by prompt length.
Yes, Flux dev accepts image input as well as a text prompt.
Flux dev was built by Black Forest Labs.
Send a request to https://api.aimlapi.com/v1/images/generations with flux/dev as the model id.
Yes. Flux dev is served through AI/ML API, so the same key and endpoint format used for other models applies.
