Skip to content

All tools · image

Flux 1.1 Pro Ultra AI Image Generator

Flux 1.1 Pro Ultra — 4MP, billboard-ready output.

Sign up free to use →From 16 ⚡ per render

Flux 1.1 Pro Ultra is the highest-resolution tier in the Flux family — generates up to 4 megapixels (2048×2048 or wider aspect ratios) in a single pass. Use it when you need print-ready output, billboards, large display assets, or 4K wallpapers without going through a separate upscaling step. 16 ⚡ per image (~₹12.80 retail) — costs more than Flux 1.1 Pro at 7 ⚡, but skips the upscaling step which would otherwise add 5 ⚡ on top.

How Flux 1.1 Pro Ultra AI Image Generator works

  1. 1

    Write a detailed prompt

    Same prompting as Flux 1.1 Pro — style tags, subject specifics, negative prompts. Ultra benefits from MORE detailed prompts since it has more pixel real estate to fill — short prompts can produce empty / repetitive backgrounds at 4MP.

  2. 2

    Pick aspect ratio

    1:1 (default 2048×2048), 16:9 (2048×1152), 9:16 (1152×2048), 4:3, 3:4. All at the same 16 ⚡ price.

  3. 3

    Generate + download

    Renders in 8-15 seconds — slower than Pro because of the 4× larger output. Download PNG. Print directly at 200+ DPI for A4 / poster format.

Why CinobiLabs

  • 4MP native — single-pass, no upscaling artifacts
  • Cheaper than Pro+Upscale workflow at the same target resolution
  • Print-ready: A4 at 250 DPI in one render
  • Same Flux quality + Black Forest Labs license

Frequently asked questions

When should I use Ultra vs Pro + Upscaler?

Math: Pro 7 ⚡ + 4× Upscale 5 ⚡ = 12 ⚡ for ~4MP output. Ultra is 16 ⚡ direct to 4MP. Pro+Upscale wins on cost (12 < 16) but adds an extra step + the upscaler can introduce artifacts. Ultra wins on quality — single-pass generation preserves detail that upscaling can't recover. Use Ultra for hero shots; use Pro+Upscale for budget-conscious bulk.

Is the quality really 4MP-native?

Yes — Black Forest Labs trained Ultra on high-resolution data so the output isn't just a bigger Pro render. Fine details (skin pores, fabric texture, text on signs) hold up under high zoom. Compare side-by-side with Pro+Upscale at 4MP and the difference is visible on close inspection.

How does it compare to DALL-E 3 HD?

DALL-E 3 HD outputs 1024×1792 (~1.8MP) at 22 ⚡. Ultra outputs ~4MP at 16 ⚡. Ultra is bigger AND cheaper. DALL-E 3 wins on stylised / illustrative output (it's a different model family); Ultra wins on resolution + cost for photorealistic work.

What's the largest practical use case?

A4 magazine spreads at 250-300 DPI (need ~3500×2480 ≈ 8.7MP — Ultra at 2048×2048 = 4.2MP covers slightly smaller print sizes). Social media hero images at 4K. Desktop wallpapers. Billboards at standard viewing distance (closer inspection of billboards reveals upscaler artifacts on lesser models).

Why not always use Ultra?

Cost (16 vs 7 ⚡) and speed (slower). For social posts viewed at 1080p or smaller, Pro is indistinguishable from Ultra and saves 9 ⚡ per render. Reserve Ultra for outputs that'll be viewed large.

Can I downscale Ultra outputs to save bandwidth?

Yes — generate at Ultra resolution then save a 1024 version for your fast-loading social posts and a 2048 version for your hero. Downscaling preserves all detail; upscaling does not.

Related tools

Flux 1.1 Pro AI Image Generator

Black Forest Labs' flagship — photoreal and complex.

Flux Schnell AI Image Generator

Cheapest production-quality AI image generator — 1 ⚡.

AI Image Upscaler (2× / 4×)

2× and 4× AI upscaling — sharp, natural detail.

Ready to try it?

Sign up free — 50 credits on signup, no card required.

Open Flux 1.1 Pro Ultra AI Image Generator →