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FLUX 1.1 Pro Ultra is a high-performance AI image generation tool by BlackForestLabs, featuring ultra-high resolution and efficient generation capabilities. It supports up to 4MP resolution (4x the standard version) while keeping single image generation time under 10 seconds - 2.5x faster than similar high-resolution models. The tool offers two core modes:
  • Ultra Mode: Designed for high-resolution needs, perfect for advertising and e-commerce where detail magnification is important. It accurately reflects prompts while maintaining generation speed.
  • Raw Mode: Focuses on natural realism, optimizing skin tones, lighting, and landscape details. Reduces the “AI look” and is ideal for photography and realistic style creation.

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What Flux 1.1 Pro Ultra Image is good at

  • Ultra-high resolution: Generates images up to 4MP, 4x the standard version’s resolution
  • Fast generation: Keeps single image generation time under 10 seconds, 2.5x faster than similar high-resolution models
  • Prompt accuracy at scale: Ultra Mode reflects prompts accurately while maintaining generation speed, suited to advertising and e-commerce work
  • Natural realism: Raw Mode optimizes skin tones, lighting, and landscape details to reduce the “AI look”
  • Image-to-image remixing: An image_prompt input blends features from an input image, with image_prompt_strength controlling the blend ratio

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Example outputs

Text-to-image generation with the Flux 1.1 [pro] Ultra Image node: Flux 1.1 pro Text-to-Image Workflow Image-to-image remixing, blending features from an input image into the output: Flux 1.1 pro Image-to-Image Remix

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Use it in ComfyUI

Flux 1.1 Pro Ultra Image workflows

Run the text-to-image and image-to-image (Remix) workflows in ComfyUI, locally or on Comfy Cloud