FLUX 2 Pro

by Black Forest Labs · released 2025-11

Black Forest Labs' frontier image model — 4MP output, up to 10-image multi-reference, 5-10s generations.

When should you use FLUX 2 Pro?

Use FLUX 2 Pro when iteration speed is the bottleneck — 5-10s per call at 4MP, up to 10 reference images, frontier prompt adherence at lower per-image cost than Nano Banana Pro. Pick Nano Banana Pro instead when on-frame text must be readable or when you need native 4K (4096 × 4096); FLUX 2 Pro caps at ~2752 × 2752.

TL;DR — FLUX 2 Pro wins on iteration speed: 4MP output, up to 10 reference images, 5-10s per generation — the fastest 4MP model that still hits frontier prompt adherence.

Specs

Max resolution 4MP — pixel ceiling ~2752 × 2752
Generation time 5-10 seconds per call
Multi-reference Up to 10 input images
Modes Text-to-image, multi-reference, edit
Aspect ratios 1:1, 16:9, 9:16, 4:3, 3:4
Parameters 32B — frontier-scale dense model
Access BFL Playground, BFL API, fal.ai, Replicate, aggregators (ShortsFast)

Best for

  • • Fast iteration on hero stills and product photography (sub-10s per call)
  • • Multi-reference composition up to 10 images for character / object persistence
  • • Per-image cost-sensitive workflows (cheaper than Nano Banana Pro at scale)

Weak at

  • • On-frame text rendering — Nano Banana Pro is the better pick when quoted text must land
  • • True 4K — FLUX 2 Pro caps at 4MP (~2752 × 2752); Nano Banana Pro pushes to 4096 × 4096
  • • World-knowledge grounding — no built-in web search, unlike Nano Banana Pro

Prompt structure

  1. Subject — specific noun phrase
  2. Composition — shot size + framing
  3. Lighting — direction + quality
  4. Style — photographic or illustrative reference
  5. References — list each attached image by index and role
  6. Negatives — optional, one or two terms only

Paste-ready recipes

Hero product still (4MP)

                A pair of white running shoes on a glossy black acrylic surface. Composition: 3/4 angle hero, centered, 1:1. Lighting: hard rim from behind-right, soft fill from front-left, deep black background. Style: high-end sneaker drop photography, sharp focus, no people. Output: 4MP, 1:1.

Character reference set (multi-ref)

                Reference images 1-4: subject_*.png — same character, four angles. Compose: a single new still of the same character, in a different setting (rain-slick Tokyo alley at night), three-quarter angle, neon magenta and cyan. Composition: medium, 9:16. Lighting: top-down neon, wet pavement reflections. Style: Blade Runner 2049 color grade.

Note: FLUX 2 Pro's multi-ref is character-stable across up to 10 images — feed 3-5 angles for best identity hold.

Editorial-grade portrait

                A 50-something man with weathered hands and a charcoal linen shirt, seated at a wooden workbench. Composition: medium close-up, 50mm equivalent, shallow depth. Lighting: hard window light from camera-left, deep shadows, warm 4000K key. Style: Annie Leibovitz editorial, slight film grain. Aspect: 4:5.

Fast iteration thumbnail

                A YouTube thumbnail-ready still: dramatic close-up of a single AI-rendered face, mouth open in surprise, harsh ring-light front. Bright saturated background, single accent color (magenta). Composition: 16:9, subject left third. Style: high-contrast YouTube thumbnail aesthetic, no text overlay.

Note: Add the headline overlay in post — FLUX 2 Pro's text rendering is weaker than Nano Banana Pro's.

FAQ

What's the difference between FLUX 2 Pro and FLUX 1.1 Pro Ultra?

FLUX 2 (released November 2025) is a generational rebuild — 32B-parameter dense model, multi-reference up to 10 images, ~10× faster than FLUX 1 Pro at comparable quality. FLUX 1.1 Pro Ultra was the prior 4MP flagship; FLUX 2 Pro supersedes it for production work.

Does FLUX 2 Pro do native 4K like Nano Banana Pro?

No — the ceiling is 4MP (≈2752 × 2752). For native 4K (4096 × 4096), pick Nano Banana Pro. For 4MP at half the latency and lower per-image cost, pick FLUX 2 Pro.

How does FLUX 2 Pro handle on-frame text?

Improved over FLUX 1 but still trails Nano Banana Pro for quoted-text rendering. Rule of thumb: if a poster's text must be readable, render with Nano Banana Pro. If text is decorative or is added in post, FLUX 2 Pro is the faster, cheaper pick.

FLUX 2 Pro vs Nano Banana Pro for character consistency?

Roughly tied with different shapes. FLUX 2 Pro takes up to 10 image refs and holds identity tightly across angles. Nano Banana Pro takes up to 14 and is better at composing references that include text and brand assets. Pick FLUX for character + scene; pick Nano Banana for composite layouts.

Primary sources

Use FLUX 2 Pro without the per-model subscription

ShortsFast bundles FLUX 2 Pro with every other frontier model under one flat $20/mo plan.

Start free See pricing

Last updated 2026-04-27. ShortsFast has no affiliation with Black Forest Labs. Specs are compiled from the vendor's public documentation and verified against primary sources on the date above.