Model: FLUX.1 dev (family: flux)
Parameters: 12B
Mixture-of-experts: no
Released: 2024-08
Modality: image
License: FLUX.1-dev Non-Commercial License (commercial use: no)
License note: Weights are non-commercial. Generated images may be used commercially, but using the model inside a product needs a separate Black Forest Labs license.
Architecture: dit
Backbone parameters: 12B
Backbone size (GB by quant): fp16: 23.8
fp8: 11.9
q8: 12.7
q4: 6.81
q2: 4.03
Components:
name: CLIP-L text encoder
fp16_gb: 0.25
offloaded: no
name: T5-XXL text encoder
fp16_gb: 9.79
fp8_gb: 4.89
q4_gb: 2.9
offloaded: yes
VAE size: 0.34 GB
Native resolution: 1024×1024
Sampling steps: 20-50
Recommended memory: gb: 6.5
quant: Q4 GGUF
No-offload memory: 33 GB
Offload floor: 3 GB
Device classes: mac
nvidia
amd
iphone
Tools: ComfyUI
Draw Things
diffusers
Notes: 12B DiT with CLIP-L and a 9.8GB T5-XXL text encoder. T5 is offloaded to CPU after prompt-encoding, so the Q4 GGUF backbone (6.8GB) drives a denoising peak of ~6.5GB, measured at 6.4GB on an RTX 2080 8GB in Forge. All-components-resident at bf16 is ~33GB. Sequential CPU offload runs on ~3GB, very slowly. Non-commercial license. Sources: BFL model card, city96 FLUX.1-dev GGUF repo and 8GB discussion, diffusers memory docs.