Model: FLUX.1 schnell (family: flux)
Parameters: 12B
Mixture-of-experts: no
Released: 2024-08
Modality: image
License: Apache-2.0 (commercial use: yes)
License note: Apache-2.0; the only FLUX.1 variant licensed for commercial products.
Architecture: dit
Backbone parameters: 12B
Backbone size (GB by quant): fp16: 23.8
fp8: 11.9
q8: 12.7
q4: 6.78
q2: 4.01
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: 1-4
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: The same 12B DiT as FLUX.1 dev, distilled to 1-4 step generation and licensed Apache-2.0 (the only commercially-usable FLUX.1 variant). T5-XXL is offloaded after prompt-encoding, so the Q4 GGUF backbone peaks at ~6.5GB during denoising. All-resident bf16 is ~33GB. Sources: BFL schnell model card, city96 FLUX.1-schnell GGUF repo, diffusers memory docs.