WaveSpeedAI APIFlux 1.1 Pro Ultra

Flux 1.1 Pro Ultra

Flux 1.1 Pro Ultra

Playground

Try it on WavespeedAI!

FLUX 1.1 Pro Ultra is the latest iteration of the FLUX series, offering professional-grade image quality with enhanced photorealism and support for resolutions up to 2K.

Features

FLUX1.1 [pro-ultra]

FLUX1.1 [pro-ultra] delivers image generation speeds up to six times faster than the previous FLUX.1 [pro], while also enhancing visual fidelity, prompt accuracy, and output variety.

Enhanced Speed and Workflow

With reduced latency and quicker generation, FLUX1.1 [pro-ultra] streamlines your creative process, striking a strong balance between output quality and performance.

Advanced Capabilities

Codenamed “blueberry” during development, FLUX1.1 [pro-ultra] was evaluated in the Artificial Analysis image arena—one of the leading benchmarks for text-to-image models—and outperformed all competitors, earning the top Elo rating.

The FLUX.1 series utilizes a hybrid design combining multimodal and parallel diffusion transformer modules, scaled to 12 billion parameters. By leveraging flow matching—a straightforward yet powerful approach to generative model training that generalizes diffusion—these models surpass previous diffusion-based methods. Additional improvements include rotary positional embeddings and parallel attention, boosting both model capability and hardware efficiency.

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 '{
    "prompt": "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. The sky is a brilliant blue with fluffy white clouds, and the airship casts a shadow on the landscape below. The scene conveys a sense of adventure and exploration",
    "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

ParameterTypeRequiredDefaultRangeDescription
promptstringYes-The prompt to generate an image from.
aspect_ratiostringNo1:11:1, 16:9, 9:16, 4:3, 3:4
output_formatstringNojpgjpg, pngThe format of the output image.
rawbooleanNofalse-Generate less processed, more natural-looking images
seedintegerNo--1 ~ 2147483647The random seed to use for the generation. -1 means a random seed will be used.
enable_base64_outputbooleanNofalse-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

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
data.idstringUnique identifier for the prediction, Task Id
data.modelstringModel ID used for the prediction
data.outputsarrayArray of URLs to the generated content (empty when status is not completed)
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to retrieve the prediction result
data.has_nsfw_contentsarrayArray of boolean values indicating NSFW detection for each output
data.statusstringStatus of the task: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds

Result Query Parameters

Result Request Parameters

ParameterTypeRequiredDefaultDescription
idstringYes-Task ID

Result Response Parameters

ParameterTypeDescription
codeintegerHTTP status code (e.g., 200 for success)
messagestringStatus message (e.g., “success”)
dataobjectThe prediction data object containing all details
data.idstringUnique identifier for the prediction, the ID of the prediction to get
data.modelstringModel ID used for the prediction
data.outputsarrayArray of URLs to the generated content (empty when status is not completed)
data.urlsobjectObject containing related API endpoints
data.urls.getstringURL to retrieve the prediction result
data.has_nsfw_contentsarrayArray of boolean values indicating NSFW detection for each output
data.statusstringStatus of the task: created, processing, completed, or failed
data.created_atstringISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.errorstringError message (empty if no error occurred)
data.timingsobjectObject containing timing details
data.timings.inferenceintegerInference time in milliseconds
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