Flux Dev

FLUX.1 [dev] is a 12B-parameter flow transformer for text-to-image generation that can produce visually pleasing, well-lit images but currently shows clear reliability and faithfulness issues. In manual tests it often misreads or ignores important parts of the prompt, leading to off-topic or overly generic/cartoonish o…

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Speed

Price

Inputs

Text

Outputs

Image

Lab

Black Forest Labs

Flux Dev sample outputs

Captured directly from our eval suite. Click any tile to inspect the full render.

Realistic portrait test

“A kodachrome 25 photograph of a woman with curly brown hair walking through a busy city street, natural lighting, dynamic composition, 35mm lens, authentic urban atmosphere”

Seed: 1401074358

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Image Size: square_hd

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Height: 1024

Text rendering capability test

“A vintage poster with the text 'GLIF ALLHANDS 2025' in bold retro typography, with undertext saying 'Reykjavik, Iceland', vibrant colors, psychedelic style with glossy 3d elements”

Seed: 1006588991

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Image Size: square_hd

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Height: 1024

Testing very long and detailed prompts

“studio photograph of a silver panther on the left, a giant beach ball in the middle and a tall man on the right. the panther has long fur and green horns, its claws are attached to garden hoses that end up in milkshakes, the left scene is a highway restaurant. The beachball has chrome and black sections and is in surrounded by water, the man is wearing hi-viz street fashion and is cosplaying as a techbro and is surrounded by multiple signs that 'we're so back'”

Seed: 2928365965

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Image Size: square_hd

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Height: 1024

Vague prompt test

“determinism”

Seed: 3928809726

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Image Size: square_hd

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Height: 1024

Social media selfie test

“male power tool influencer taking a selfie, perfect lighting, trendy outfit, confident smile, modern background, candid raw iPhone photo style”

Seed: 4043351403

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Image Size: square_hd

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Height: 1024

Check if a model can do miniature scenes inherently

“Miniature tilt-shift scene of a wooden trebuchet siege engine in a medieval military warcamp, with canvas tents scattered around, armored soldiers and engineers working on the catapult, wooden fortifications in background, campfires smoking, banners fluttering in the wind, muddy ground with wagon tracks, medieval era setting”

Seed: 2002504408

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Image Size: square_hd

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Height: 1024

Suprise prompt

“grindle flompa zeet varoo, plingle drask in bloofer haze — twomple zarn reega 7, snibble dront kalee swoop, mirra gongle thru floovian glass, blorpa tect frindle noom, abstract glibber fog machine of gloon and jell, high surreal detail, untranslatable energy field, visual nonsense in motion”

Seed: 1561067958

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Image Size: square_hd

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Height: 1024

Tall forehead test

“1928 Mickey Mouse with a very, very tall forehead”

Seed: 2901976333

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Image Size: square_hd

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Height: 1024

Flux Dev

Flux Dev sample outputs

Realistic portrait test

Text rendering capability test

Testing very long and detailed prompts

Vague prompt test

Social media selfie test

Check if a model can do miniature scenes inherently

Suprise prompt

Tall forehead test

More from the Flux family

Launch your first agent today

Flux Dev

Flux Dev sample outputs

Realistic portrait test

Text rendering capability test

Testing very long and detailed prompts

Vague prompt test

Social media selfie test

Check if a model can do miniature scenes inherently

Suprise prompt

Tall forehead test

More from the Flux family

Launch your first agent today