High-Resolution Output
Generates images up to 4 megapixels, providing fine detail suitable for print and professional visual production.
Blackforestlabs
FLUX 1.1 [pro] Ultra
FLUX 1.1 [pro] Ultra is a text-to-image generation model developed by Black Forest Labs. It produces images at resolutions up to 4 megapixels and is designed to closely follow text prompt instructions while maintaining image quality at high resolutions. The model offers two generation modes: Ultra mode, which prioritizes strict prompt adherence, and Raw mode, which produces a more naturalistic rendering with fewer synthetic-looking artifacts. FLUX 1.1 [pro] Ultra is suited for professional and creative applications that require high-resolution output, such as concept art, print materials, and social media visuals. It is accessible via the Black Forest Labs API, making it straightforward to integrate into existing workflows and platforms. The model accepts a seed input for reproducible outputs alongside configurable generation settings.
A specific training data cutoff date is not provided in the available metadata for this model.
10,000 context
N/A output
High-Resolution Output
Prompt Adherence
Raw Realism Mode
Seed-Based Reproducibility
Configurable Generation
API Integration
Model Overview
High-signal model metadata in a structured two-column overview table.
Provider
The entity that provides this model.
Blackforestlabs
Input Context Window
The number of tokens supported by the input context window.
10,000
tokens
Maximum Output Tokens
The number of tokens that can be generated by the model in a single request.
N/A
tokens
Open Source
Whether the model's code is available for public use.
No
Release Date
When the model was first released.
A specific training data cutoff date is not provided in the available metadata for this model.
Knowledge Cut-off Date
When the model's knowledge was last updated.
A specific training data cutoff date is not provided in the available metadata for this model.
API Providers
The providers that offer this model. This is not an exhaustive list.
Hugging Face
Modalities
Types of data this model can process.
Image
Text
What is FLUX 1.1 [pro] Ultra
A fuller summary of positioning, capabilities, and source-specific details for FLUX 1.1 [pro] Ultra.
FLUX 1.1 [pro] Ultra is a text-to-image generation model developed by Black Forest Labs. It produces images at resolutions up to 4 megapixels and is designed to closely follow text prompt instructions while maintaining image quality at high resolutions. The model offers two generation modes: Ultra mode, which prioritizes strict prompt adherence, and Raw mode, which produces a more naturalistic rendering with fewer synthetic-looking artifacts.
FLUX 1.1 [pro] Ultra is suited for professional and creative applications that require high-resolution output, such as concept art, print materials, and social media visuals. It is accessible via the Black Forest Labs API, making it straightforward to integrate into existing workflows and platforms. The model accepts a seed input for reproducible outputs alongside configurable generation settings.
Capabilities
What FLUX 1.1 [pro] Ultra supports
Prompt Adherence
Ultra mode maintains close fidelity to the input text prompt even at maximum resolution settings.
Raw Realism Mode
Raw mode produces a more organic, naturalistic rendering that reduces visually synthetic artifacts in the output image.
Seed-Based Reproducibility
Accepts a seed input so that the same prompt and seed value will produce a consistent, reproducible image output.
Configurable Generation
Exposes multiple select-type parameters allowing control over generation options such as mode, aspect ratio, and output format.
API Integration
Available through the Black Forest Labs API, enabling integration into external platforms and creative pipelines including ComfyUI.
Pricing for FLUX 1.1 [pro] Ultra
Primary API pricing shown in the same “quick compare” spirit as the reference page.
Input tokens
N/A
Per million tokens
Output tokens
N/A
Per million tokens
API Access & Providers
Places where this model is available, based on the synced detail-page metadata.
Hugging Face
Configuration & Parameters
The configurable options currently documented for this model.
Prompt Upsampling
SelectRaw Mode
SelectAspect Ratio
SelectSeed
SeedA specific value that is used to guide the 'randomness' of the generation.
Supported Request Parameters
Parameters currently listed by OpenRouter or the local catalog for this model.
Resources & Documentation
Official model cards, release notes, docs, and other references synced from the source page.
FAQ
Common questions about FLUX 1.1 [pro] Ultra
What is the maximum output resolution for FLUX 1.1 [pro] Ultra?
FLUX 1.1 [pro] Ultra can generate images up to 4 megapixels, making it suitable for high-resolution professional and print use cases.
What is the context window for this model?
The model has a context window of 10,000 tokens, which governs the length of the text prompt it can process.
What is the difference between Ultra mode and Raw mode?
Ultra mode prioritizes strict adherence to the text prompt without sacrificing image quality. Raw mode produces a more natural, organic rendering that reduces synthetic-looking artifacts for a more realistic result.
Does FLUX 1.1 [pro] Ultra have a training data cutoff date?
A specific training data cutoff date is not provided in the available metadata for this model.
How can developers integrate FLUX 1.1 [pro] Ultra into their workflows?
The model is accessible via the Black Forest Labs API and has community-maintained integrations such as a ComfyUI plugin using the BFL API, allowing it to be embedded into existing creative and development pipelines.
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