FLUX1.1 [pro] Ultra
FLUX1.1 [pro] Ultra is Black Forest Labs's highest-resolution tier of the FLUX 1.1 Pro model. It adds raw image format support and expanded resolution capabilities for print, large-format, and photorealistic output use cases.
import { experimental_generateImage as generateImage } from 'ai';
const result = await generateImage({ model: 'bfl/flux-pro-1.1-ultra', prompt: 'A red balloon on a wooden table.'});Playground
Try out FLUX1.1 [pro] Ultra by Black Forest Labs. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
Providers
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
More models by Black Forest Labs
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About FLUX1.1 [pro] Ultra
FLUX1.1 [pro] Ultra is the highest tier of the FLUX 1.1 Pro model, available through AI Gateway since November 1, 2024 as part of the image-only model expansion. The "Ultra" designation adds raw image format support and expanded resolution capabilities beyond standard FLUX 1.1 Pro. Choose it when output quality and resolution are the primary constraints rather than generation speed or cost.
Raw image output is a meaningful differentiator for professional and post-production workflows. Unlike compressed formats such as JPEG or WebP, raw files preserve the full tonal range without lossy compression artifacts. That gives retouchers, photographers, and design teams more latitude for color grading, exposure adjustment, and compositing.
Within the FLUX family on AI Gateway, Ultra occupies the resolution and format quality ceiling of the FLUX.1 generation. If you need the highest quality from the FLUX.1 lineage (print collateral, large-format advertising, billboard assets, high-resolution stock imagery), Ultra provides the output dimensions and file format support that standard FLUX 1.1 Pro doesn't.
What To Consider When Choosing a Provider
- Configuration: FLUX1.1 [pro] Ultra's raw image format output is particularly valuable for post-production pipelines where generated images will be retouched, color-graded, or composited. Raw files retain more tonal information than compressed formats.
- Zero Data Retention: AI Gateway does not currently support Zero Data Retention for this model. See the documentation for models that support ZDR.
- Authentication: AI Gateway authenticates requests using an API key or OIDC token. You do not need to manage provider credentials directly.
When to Use FLUX1.1 [pro] Ultra
Best For
- Print and large-format output: Advertising materials, billboards, posters, and print publications that need maximum image resolution and high pixel density
- Post-production pipelines: Raw format output retains full tonal information for professional retouching, color grading, or compositing
- High-resolution stock imagery: Commercial generation where output quality and fine photorealistic detail are the primary requirement
- FLUX.1 quality ceiling: Applications that justify the additional per-image cost for the highest visual quality in the FLUX.1 generation
Consider Alternatives When
- Cost efficiency: FLUX 1.1 Pro delivers the same model at lower cost per image when standard resolution output is sufficient
- FLUX.2 architecture features: FLUX.2 Pro or FLUX.2 Max provide multi-reference input, 4 MP editing, and improved world knowledge architecture
- Real-time generation speed: Ultra's higher-quality generation isn't optimized for sub-second interactive throughput
Conclusion
FLUX1.1 [pro] Ultra extends FLUX 1.1 Pro to its maximum quality ceiling with raw image format output and higher resolution support. For professional creative pipelines where AI-generated images serve as source assets rather than final deliverables, Ultra provides the output quality and format characteristics that standard tiers don't.
Frequently Asked Questions
What does FLUX1.1 [pro] Ultra cost per image?
This page lists the current rates. Multiple providers can serve FLUX1.1 [pro] Ultra, so AI Gateway surfaces live pricing rather than a single fixed figure.
What does "Ultra" add over standard FLUX 1.1 Pro?
Raw image format output and expanded resolution capabilities. Standard FLUX 1.1 Pro produces compressed image outputs. Ultra retains more tonal information through raw format support and supports higher output dimensions.
What is raw image format output and why does it matter?
Raw image files preserve the full tonal range of generated content without lossy compression artifacts. For post-production workflows involving retouching, color grading, or compositing, raw files give creative teams significantly more latitude than compressed formats like JPEG.
When should I use Ultra instead of FLUX.2 Max for high-quality generation?
FLUX.2 Max is part of the FLUX.2 generation with multi-reference input, 4 MP resolution, and improved world knowledge architecture. Ultra is the FLUX.1 generation's highest quality tier. If your workflow specifically benefits from raw format output in the FLUX.1 lineage, Ultra is appropriate. If you need multi-reference and world knowledge capabilities, FLUX.2 Max is more suitable.
Is FLUX1.1 [pro] Ultra slower than standard FLUX 1.1 Pro?
Higher-resolution generation generally requires more compute per image. Ultra prioritizes maximum quality and resolution over generation speed, so it isn't the right choice for latency-sensitive or real-time workflows.
Does FLUX1.1 [pro] Ultra support image editing in addition to text-to-image generation?
FLUX1.1 [pro] Ultra is a text-to-image model. For editing existing images, the Kontext models (Pro, Max) and Fill Pro are purpose-built for editing and inpainting workflows respectively.
Is FLUX1.1 [pro] Ultra a multimodal LLM?
No. FLUX1.1 [pro] Ultra is a dedicated image generation model with no conversational context or chat interface. Use
generateImagefrom the AI SDK to send requests.