Flux

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FLUX 1.1 Pro Ultra - state-of-the-art image generation by Black Forest Labs

Black Forest Labs · Image Generation

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Quick Answer

Flux is flux 1.1 pro ultra - state-of-the-art image generation by black forest labs, made by Black Forest Labs. It offers a free tier with paid upgrades. Key uses: Photorealistic generation, Commercial photography, Fine-tuning.

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What is Flux?

Flux is a family of text-to-image models by Black Forest Labs (founded by Stable Diffusion creators). FLUX 1.1 Pro Ultra (4MP resolution) and FLUX.1 Pro set the standard for photorealism and prompt accuracy. [schnell] open-weights variant runs locally.

What's new in Flux in 2026?

FLUX 1.1 Pro Ultra (Nov 2024) - 4MP resolution, best-in-class realism; FLUX Video (2025, alpha); FLUX.1 Fill for inpainting; FLUX.1 Canny/Depth for ControlNet-style conditioning

What can you do with Flux?

  • Photorealistic generation
  • Commercial photography
  • Fine-tuning
  • API integration
  • 4K image creation

Pros

  • FLUX 1.1 Pro Ultra: 4MP native resolution
  • Best prompt accuracy of any model
  • Fast variants available
  • Open weights [schnell]
  • Video generation (FLUX Video, 2025)

Cons

  • Pro version costs credits
  • Ecosystem still growing vs Midjourney

Specs

Underlying Models

  • FLUX 1.1 Pro Ultra (4MP)
  • FLUX 1.1 Pro
  • FLUX.1 Dev (open)
  • FLUX.1 Schnell (open, fast)

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What are the best alternatives to Flux?

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Frequently Asked Questions about Flux

Is Flux free?

Flux offers a free tier with limited usage. Paid plans unlock additional features.

What is Flux used for?

Flux is used for: Photorealistic generation, Commercial photography, Fine-tuning, API integration, 4K image creation.

What are the best alternatives to Flux?

Top alternatives to Flux include Midjourney, GPT Image 2, Stable Diffusion.