Black Forest Labs: FLUX1.1 [pro] Ultra

FLUX1.1 [pro] ultra is the newest version of FLUX1.1 [pro], maintaining professional-grade image quality while delivering up to 2K resolution with improved photo realism.

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flux-pro-1.1-ultra

AvailableBlack Forest LabsImageSync / Async

Price: From $0.06
Modalities: Image

About FLUX1.1 [pro] Ultra

FLUX1.1 [pro] Ultra is the high-resolution mode of Black Forest Labs' FLUX1.1 [pro], producing images up to 2K with improved photo realism. It is controlled by aspect ratio from 21:9 to 9:21 rather than pixel dimensions, and has a raw mode for less processed, more natural-looking results. Text-to-image only, with an optional image prompt.

Where it works well

Black Forest Labs describes output of up to 2K resolution while keeping professional-grade quality.
Raw mode gives less processed, more natural-looking images for photographic styles.
The image prompt strength setting (0 to 1, default 0.1) controls how much a reference image steers the result.

When to choose another model

Size is chosen by aspect ratio, not width and height, so exact pixel dimensions cannot be set.
It only generates from text and an optional image prompt; edit instructions need a Kontext or FLUX.2 model.
Compared with FLUX1.1 [pro], each image is larger, so it suits final renders more than quick drafts.

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.

Send your first request

Copy the example for your language and run it against the endpoint.

Text to imageTokenLab endpoint

POST/v1/images/generations

curl -X POST "https://api.tokenlab.sh/v1/images/generations" \
  -H "Authorization: Bearer sk-xxx" \
  -H "Content-Type: application/json" \
  -d '{
  "operation": "text-to-image",
  "model": "flux-pro-1.1-ultra",
  "prompt": "A minimalist product photo of matte black headphones on a soft blue background."
}'

Parameters

Text to image

Parameter	Values and limits	Default	Notes
`aspect_ratio`	Not provided	Not provided	Model-specific aspect-ratio values and the default are not yet verified for this public operation.
`async`	Not provided	Not provided	Not provided
`image_prompt`	Not provided	Not provided	Not provided
`prompt`	Not provided	Not provided	Not provided
`raw`	Not provided	Not provided	Not provided

image: Text-to-image does not require a source image. Source-image controls are used by the declared image operations.

Task-capable image contract; `async: true` is accepted when the public status mode is `inline_or_task`.

Pricing

The Verified price applies to Verified, which costs less on most models. The Official price is the model maker's published price and applies to the more reliable Official route. Auto bills the route that completes the request.

Text to image

per image

Official price: $0.06
Verified price: —
Discount: —

	Official priceper image	Verified priceper image	Discount
Text to image	$0.06	—	—

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

Requests
Success rate
P95 latency
Total tokens

Model performance

Last updated Nov 1, 2026, 3:11 PM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open FLUX1.1 [pro] Ultra in Console with a prompt ready to edit or send.

Help me create an image with flux-pro-1.1-ultra using text-to-image at /v1/images/generations. Show the result, cost, and any limits I should know.

Use cases

Best for

Text to Image

Large-format photography looks
Render landscape, food, or architecture scenes where fine detail must survive cropping.
Natural-looking portraits
Switch on raw mode to avoid an over-polished look for lifestyle imagery.
Wide banners and posters
Use 21:9 or 9:21 aspect ratios for site headers and tall print layouts.

Prompt examples

Candid street portrait of an elderly fisherman mending a net, overcast light, film grain, natural skin texture.

Wide landscape of a glacier valley at blue hour, long exposure on the river, 21:9.

Overhead food photograph of a handmade pasta dinner on a rustic table, soft daylight.

FAQ

What does Ultra add over FLUX1.1 [pro]?

Output up to 2K resolution, an aspect-ratio control from 21:9 to 9:21, and a raw mode for natural-looking images. The base model is the one with explicit width and height settings.

What is raw mode on FLUX1.1 [pro] Ultra?

Raw mode is a switch that yields less processed, more natural-looking pictures instead of heavily stylised ones. Turn it on for candid, documentary-style photography and lifestyle imagery.

Can I steer Ultra with a reference image?

Yes. Add a base64 image prompt and set image_prompt_strength between 0 and 1; the default is 0.1, so the text leads unless you raise it.

What aspect ratios are supported?

Anything between 21:9 and 9:21, with 16:9 as the default. Pixel dimensions are not set directly in this mode; the aspect ratio decides the shape of the image.

How much does FLUX1.1 [pro] Ultra cost?

On TokenLab, FLUX1.1 [pro] Ultra costs $0.06 per image. The pricing table above shows the full breakdown. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.

Which endpoint should FLUX1.1 [pro] Ultra use?

Use https://api.tokenlab.sh/v1/images/generations for FLUX1.1 [pro] Ultra. The request example below shows the matching code shape.

Which operations does FLUX1.1 [pro] Ultra support?

FLUX1.1 [pro] Ultra supports Text to image. Select an operation above to see its endpoint and request example.