Flux 1.1 Pro Ultra is an advanced AI image generator designed to create high-resolution images rapidly and efficiently. It is optimized for various applications, including content creation, e-commerce, and advertising, providing users with the ability to generate visually appealing images at unprecedented speeds.
Flux 1.1 Pro Ultra primarily supports English but can handle prompts in other languages depending on the input structure.
Flux 1.1 Pro Ultra is built on a refined version of the Transformer architecture, optimized for image generation tasks:
The model was trained on a diverse dataset that includes a wide range of images and textual descriptions to enhance its understanding of visual concepts.
Flux 1.1 Pro Ultra has demonstrated strong performance metrics:
Flux 1.1 Pro's Ultra mode offers a remarkable 4x boost in resolution, reaching up to 2048x2048 (4MP) for exceptionally detailed artwork and high-quality prints. Perfect for creators, it produces sharp, vibrant graphics suitable for posters, marketing materials, and fine art.
With a rapid 10-second generation time, Flux 1.1 Pro is 2.5x faster than most high-resolution AI models. It maintains detail and quality even at higher resolutions, making it ideal for time-sensitive projects.

The model is available on the AI/ML API platform as "flux-pro/v1.1 ultra" .
To enable raw mode, simply add raw to the models name. Here is an example:
Detailed API Documentation is available here.
Black Forest Labs emphasizes ethical considerations in AI development by promoting responsible usage of their models. They encourage users to adhere to guidelines that prevent misuse or harmful applications of generated content.
Flux 1.1 Pro Ultra is available under a commercial license that allows both commercial and non-commercial usage rights while ensuring compliance with ethical standards.
Try Flux 1.1 [Pro Ultra] API here.
import requests r = requests.post( "https://api.aimlapi.com/v1/images/generations", headers={"Authorization": "Bearer " + AIMLAPI_KEY}, json={ "model": "blackforestlabs/flux-pro-1.1-ultra", "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": "blackforestlabs/flux-pro-1.1-ultra", "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":"blackforestlabs/flux-pro-1.1-ultra","prompt":"A cat holding a sign that says hello"}'
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Output | |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Flux pro 1.1 ultra This page | Image generation at scale | |||
| Image generation at scale | ||||
| Image generation at scale | ||||
| Image generation at scale | ||||
| Image generation at scale |
Flux pro 1.1 ultra takes image, text as input and returns image.
Flux pro 1.1 ultra became available on June 12, 2026.
Flux pro 1.1 ultra is priced at $0.078 / gen (variable).
Flux pro 1.1 ultra is billed per generation — a fixed charge per output rather than by prompt length.
Yes, Flux pro 1.1 ultra accepts image input as well as a text prompt.
Flux pro 1.1 ultra was built by Black Forest Labs.
Send a request to https://api.aimlapi.com/v1/images/generations with blackforestlabs/flux-pro-1.1-ultra as the model id.
Yes. Flux pro 1.1 ultra is served through AI/ML API, so the same key and endpoint format used for other models applies.