Model reference · open weights
FLUX.1-Krea-dev is an open-weight image model from Black Forest Labs. FLUX.1-Krea-dev (BF16) weighs 33.7 GB; the smallest configuration that runs it is RTX 5090 32 GB.
Summary of the black-forest-labs/FLUX.1-Krea-dev model card, 2026-10-01
What it is
| Released by | Black Forest Labs |
|---|---|
| Released | 2025-07-07 |
| Parameters | 11.9B |
| VRAM | 33.7 GB for the weights |
What it runs on
| Card | One image | Memory |
|---|---|---|
| RTX 3060 12 GB … RTX 4090 24 GB | does not fit | |
| RTX 5090 32 GB | tight (encoders offloaded) | 31.0 GB |
| L40S 48 GB | tight | 44.0 GB |
| A100 80 GB | fits | 78.2 GB |
| H100 80 GB | fits | 78.1 GB |
| RTX PRO 6000 Blackwell 96 GB | fits | 93.8 GB |
| DGX Spark (GB10) 128 GB unified | fits | 107 GB |
| H200 141 GB | fits | 138 GB |
| B200 180 GB | fits | 176 GB |
How it works
Running it yourself
Rent a machine by the hour. ComfyUI is installed on it. Open ComfyUI through the tunnel, then Templates → Flux.1 Krea Dev: it loads ComfyUI's own build of this model, the files above.
# on your rented machine (the ssh line is on its page in the console)
# get REPO FILE FOLDER: one file into /workspace/models/FOLDER, where ComfyUI loads it from
get() { hf download "$1" "$2" --local-dir /workspace/hf-files && mkdir -p "/workspace/models/$3" && mv "/workspace/hf-files/$2" "/workspace/models/$3/$4"; }
# the files of the template “Flux.1 Krea Dev” (20.7 GB)
get comfyanonymous/flux_text_encoders clip_l.safetensors text_encoders
get comfyanonymous/flux_text_encoders t5xxl_fp16.safetensors text_encoders
get Comfy-Org/Lumina_Image_2.0_Repackaged split_files/vae/ae.safetensors vae
get Comfy-Org/FLUX.1-Krea-dev_ComfyUI split_files/diffusion_models/flux1-krea-dev_fp8_scaled.safetensors diffusion_models
start-comfyui# on your computer, in a second terminal: ComfyUI in your browser at http://localhost:8188
# HOST and PORT are your machine's, from its page in the console
ssh -L 8188:localhost:8188 dev@HOST -p PORT