Local AI
Local AI
Intermediate
Run Flux Locally
Download and run Flux.1 [dev/schnell] on consumer hardware
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What is Flux?
Flux.1 is an open-source image generation model from Black Forest Labs. It produces high-quality images with excellent prompt following and text rendering.
Official site: blackforestlabs.ai
Variants
| Variant | License | Quality | Speed |
|---|---|---|---|
| Flux.1 [dev] | Non-commercial | Highest | Slower |
| Flux.1 [schnell] | Apache 2.0 | Very high | Fastest |
Minimum requirements
- FP16: 16+ GB VRAM
- NF4/GGUF quantized: 8–12 GB VRAM
- CPU offload: works on less VRAM, much slower
Download Flux for ComfyUI
You need three files:
- UNET →
ComfyUI/models/unet/flux1-dev.safetensors
- CLIP →
ComfyUI/models/clip/flux_clip.safetensors
- VAE →
ComfyUI/models/vae/flux_vae.safetensors
Search Hugging Face for ComfyUI-compatible Flux checkpoints.
Quantized versions
If you lack VRAM, download NF4 or GGUF versions of the UNET. Load them in ComfyUI with the corresponding loader nodes.
Prompt
Flux understands natural language well:
a futuristic Tokyo street at night, neon signs, wet pavement reflecting lights, cinematic
Tip
Schnell needs only 4 sampling steps. Dev needs 20–28. Adjust the KSampler accordingly.