flux-3-image-klein-base

Quantised media packages of black-forest-labs/flux-3-image-klein-base.

MECHA Forge

MECHA — Model Engineering & Contextual Hearth Assembly

These media packages have been forged and optimized in the MECHA Forge. Each one holds the Denoiser, Text Encoder, and VAE components packaged together for easier deployment.

Description

FLUX 3 Image Klein Base: 5.6B undistilled text-to-image model (Qwen3-VL-4B text encoder). Base (non-distilled) variant for full-quality generation and fine-tuning. Supports text-to-image, single/multi-reference editing, bounding-box layout.

Available quantizations

Quant	Denoiser	Text encoder	VAE
FP4	FP4	FP4	FP8
FP8	FP8	FP8	FP8
INT4	INT4	INT4	INT8
INT8	INT8	INT8	INT8

The VAE is shared between formats: FP4 reuses the FP8 file, INT4 reuses the INT8 file.

Recommended settings

From the source model card (adjust to taste):

Parameter	Value
Steps	50 (base)
CFG / Guidance scale	3.5 (base)
Resolution	1024x1024
Notes	Use prompt upsampler; short prompts give generic output

Example prompts

Caught in the moment (candid, slice of life):

masterpiece, best quality, highres, absurdres, very aesthetic, safe, 1man,
solo, candid moment, natural lighting. An open-air street cafe on a sunny summer
afternoon, a small round bistro table under a striped patio parasol, potted
plants and climbing flowers, warm golden sunlight and a gentle breezy
atmosphere. A young man with short dark hair and brown eyes. He has a lean
build. He wears a teal linen shirt with sleeves rolled up, and dark
trousers, and tan loafers. He sits at the cafe table with a glass of iced
coffee, and a relaxed smile.

Fashion photography (magazine cover style):

Fashion photography, magazine cover style: a 28-year-old woman with sharp
cheekbones, piercing green eyes, and a defined jawline; wearing a crimson silk
slip dress with a plunging neckline and a gold chain belt, layered pearl
necklace, strappy stilettos; studio rim lighting, bold serif typography, high
contrast, cinematic, 8K, sharp focus, Vogue editorial.

Scenery:

Scenery: a windswept coastal cliff at golden hour, crashing waves below,
dramatic cumulus clouds, golden light on wet rocks, seagulls in flight,
wildflowers in the foreground, photorealistic, wide angle, 8K.