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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.

Image Gen
index.ts
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.'
});
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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 generateImage from the AI SDK to send requests.