Flux 1.1 Pro

Playground

FLUX 1.1 Pro delivers professional photoreal image generation with enhanced realism and support up to 2K resolution. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

FLUX 1.1 Pro

Generate high-quality images from text with FLUX 1.1 Pro — Black Forest Labs’ professional-grade text-to-image model. Renowned for exceptional prompt understanding, beautiful compositions, and versatile style capabilities, it delivers stunning results at an accessible price point.

Looking for maximum quality? Try FLUX 1.1 Pro Ultra for premium output with raw mode support.

Why It Looks Great

Professional quality: Delivers polished, publication-ready images with excellent detail.
Superior prompt understanding: Accurately interprets nuanced, poetic, and complex descriptions.
Beautiful compositions: Creates visually balanced, aesthetically pleasing layouts naturally.
Style versatility: Handles everything from ethereal fine art to photorealistic scenes.
Flexible aspect ratios: Multiple format options for any creative need.
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: 16:9.
output_format	No	File format: jpg or png. Default: jpg.
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 details about subject, mood, 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.
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	$0.04

Best Use Cases

Fine Art & Ethereal Imagery — Create dreamlike, poetic, and emotionally evocative visuals.
Editorial & Magazine Content — Generate publication-quality images for articles and features.
Concept Art — Visualize scenes, environments, and artistic concepts.
Social Media & Marketing — Produce eye-catching visuals for campaigns and posts.
Creative Storytelling — Illustrate narratives with atmospheric, mood-driven imagery.

Example Prompts

“A woman suspended just beneath the surface of still water, her white dress flowing around her like petals. Soft light filters from above, illuminating her serene expression. The composition feels ethereal, quiet, and almost mythical.”
“Ancient library at twilight, dust particles floating in golden light beams, towering bookshelves disappearing into shadows”
“Minimalist portrait of a dancer mid-leap, dramatic side lighting, motion blur on flowing fabric, black background”
“Overgrown greenhouse with broken glass ceiling, wild flowers reclaiming the space, morning fog, nostalgic atmosphere”
“Cinematic wide shot of a lone figure standing on cliff edge, stormy sea below, dramatic clouds, moody color palette”

Pro Tips for Best Results

FLUX responds beautifully to poetic, evocative language — describe feelings and atmosphere.
Use compositional language: “suspended”, “flowing”, “illuminating”, “ethereal”.
Include emotional qualities: “serene”, “quiet”, “mythical”, “nostalgic”.
Describe lighting in detail — it dramatically affects the mood of outputs.
The model excels at dreamy, artistic imagery — lean into abstract and emotional descriptions.
Match aspect ratio to composition: 16:9 for cinematic landscapes, 9:16 for portraits.

Model Comparison

Model	Cost	Best For
FLUX 1.1 Pro	$0.04	Professional quality, balanced price/performance
FLUX 1.1 Pro Ultra	$0.06	Maximum quality, raw mode for natural aesthetics

Notes

The enable_base64_output option is only available through the API.
Generation time may vary based on prompt complexity and queue load.
FLUX is particularly strong with artistic, atmospheric, and emotionally-driven prompts.
For the highest quality output with raw mode, consider FLUX 1.1 Pro Ultra.

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" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "aspect_ratio": "1:1",
    "output_format": "jpg",
    "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.
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 Srpo Image To Image Flux 1.1 Pro Ultra