Flux 1.1 Pro Ultra

Playground

FLUX 1.1 Pro Ultra is the latest FLUX model delivering professional-grade photoreal image generation with support up to 2K resolution. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

FLUX 1.1 Pro Ultra

Generate stunning, highly detailed images with FLUX 1.1 Pro Ultra — the premium tier of Black Forest Labs’ acclaimed FLUX model family. Known for exceptional prompt adherence, intricate detail rendering, and versatile style capabilities, it’s the go-to choice for professional-quality image generation.

Why It Looks Great

Ultra-quality output: Premium tier delivers maximum detail, coherence, and visual fidelity.
Exceptional prompt adherence: Accurately interprets complex, multi-element descriptions.
Raw mode: Toggle for less processed, more natural-looking images.
Intricate detail rendering: Excels at fine textures, ornate designs, and complex machinery.
Flexible aspect ratios: Multiple format options for any use case.
Prompt Enhancer: Built-in tool to refine and expand your descriptions automatically.
Reproducible results: Use the seed parameter to recreate exact outputs.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the image you want to generate.
aspect_ratio	No	Output format (e.g., 1:1, 16:9, 9:16). Default: 1:1.
output_format	No	File format: jpg or png. Default: jpg.
raw	No	Enable for less processed, more natural-looking images.
seed	No	Random seed for reproducibility. Leave empty for random.
enable_base64_output	No	API only: Returns base64 string instead of URL.

How to Use

Write your prompt — describe your image with rich details about subject, style, and atmosphere.
Use Prompt Enhancer (optional) — click to automatically enrich your description.
Choose aspect ratio — select the format that fits your needs.
Select output format — choose jpg for smaller files or png for higher quality.
Toggle raw mode (optional) — enable for more natural, less processed aesthetics.
Set seed (optional) — for reproducible results.
Run — click the button to generate.
Download — preview and save your image.

Pricing

Flat rate per image generation.

Output	Cost
Per image	$0.06

Best Use Cases

Concept Art & Illustration — Create detailed fantasy, sci-fi, and steampunk imagery.
Product Visualization — Generate intricate product concepts with fine details.
Architectural Rendering — Visualize ornate buildings and interior designs.
Marketing & Advertising — Produce high-quality visuals for campaigns.
Creative Exploration — Experiment with complex, multi-element compositions.

Example Prompts

“A grand steampunk airship soaring through the sky, with intricate brass and copper details, large propellers spinning, and a massive balloon filled with hot air. The airship is adorned with Victorian-style architecture, featuring ornate railings and decorative elements.”
“Photorealistic portrait of an elderly craftsman in his workshop, warm natural lighting, detailed wood textures and tools in background”
“Enchanted library with floating books, magical glowing orbs, spiral staircases reaching into infinite darkness, fantasy art style”
“Futuristic motorcycle design with sleek aerodynamic curves, chrome and matte black finish, studio lighting”
“Japanese zen garden at dawn, morning mist over raked sand patterns, moss-covered stones, cherry blossom petals falling”

Raw Mode Explained

Setting	Result	Best For
Raw OFF (default)	More polished, vibrant, enhanced look	Marketing, social media, stylized content
Raw ON	Less processed, natural, organic feel	Photorealism, documentary style, authentic aesthetics

Pro Tips for Best Results

FLUX excels at intricate details — don’t hesitate to describe ornate, complex elements.
Include material descriptions: “brass and copper”, “chrome finish”, “weathered wood”.
Specify lighting conditions for more controlled outputs.
Use raw mode when you want images that feel more like photographs than renders.
Layer your descriptions: subject → details → environment → style → mood.
The model handles long, detailed prompts exceptionally well — be descriptive!

Notes

The enable_base64_output option is only available through the API.
Generation time may vary based on prompt complexity and queue load.
FLUX 1.1 Pro Ultra represents the highest quality tier in the FLUX family.
Raw mode is particularly effective for portraits and natural scenes.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result


# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/flux-1.1-pro-ultra" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "aspect_ratio": "1:1",
    "output_format": "jpg",
    "raw": false,
    "enable_base64_output": false
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"

Parameters

Task Submission Parameters

Request Parameters

Parameter	Type	Required	Default	Range	Description
prompt	string	Yes		-	The positive prompt for the generation.
aspect_ratio	string	No	1:1	1:1, 16:9, 9:16, 4:3, 3:4
output_format	string	No	jpg	jpg, png	The format of the output image.
raw	boolean	No	false	-	Generate less processed, more natural-looking images.
seed	integer	No	-	-1 ~ 2147483647	The random seed to use for the generation.
enable_base64_output	boolean	No	false	-	If enabled, the output will be encoded into a BASE64 string instead of a URL. This property is only available through the API.

Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data.id	string	Unique identifier for the prediction, Task Id
data.model	string	Model ID used for the prediction
data.outputs	array	Array of URLs to the generated content (empty when status is not `completed`)
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.has_nsfw_contents	array	Array of boolean values indicating NSFW detection for each output
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Result Request Parameters

Parameter	Type	Required	Default	Description
id	string	Yes	-	Task ID

Result Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data	object	The prediction data object containing all details
data.id	string	Unique identifier for the prediction, the ID of the prediction to get
data.model	string	Model ID used for the prediction
data.outputs	string	Array of URLs to the generated content (empty when status is not completed).
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Flux 1.1 Pro Flux 2 Dev Edit