How to run FLUX.1 [dev] locally

Black Forest Labs · Text → image · 12B params · FLUX.1-dev Non-Commercial License (non-commercial)

The 12B rectified-flow transformer that became the de facto open text-to-image quality leader after SDXL, with a huge LoRA/fine-tune ecosystem.

What it costs to run — $0 markup

On your own machine — $0. Runs free if you have about 12 GB of VRAM (fp8/GGUF ~12GB; full bf16 ~24GB; NF4 ~8GB), via ComfyUI / Diffusers.
Rent a GPU — from $0.26/hr. Fits RTX 3090 24GB at the direct vendor price ($0 markup) — pay only for the minutes you generate.
Download the weights — free. Open weights at black-forest-labs/FLUX.1-dev.

Note: generative-media models are billed per image / per second / per minute on hosted services — not per token. Running locally or on your own rented GPU is usually far cheaper and keeps your data on your machine.

Key facts

Does	Text → image
VRAM to run	~12 GB (fp8/GGUF ~12GB; full bf16 ~24GB; NF4 ~8GB)
Download	~24 GB
Parameters	12B
License	FLUX.1-dev Non-Commercial License (non-commercial)
Run with	ComfyUI / Diffusers

Get FLUX.1 [dev] on Hugging Face →

More image models

Stable Diffusion XL 1.0 (SDXL) — Text → image, ~8.0 GB VRAM
Stable Diffusion 1.5 — Text → image, ~4.0 GB VRAM
FLUX.1 Kontext [dev] — Image editing, ~12 GB VRAM
FLUX.1 [schnell] — Text → image, ~12 GB VRAM
Qwen-Image — Text → image, ~24 GB VRAM
Stable Diffusion 3.5 Large — Text → image, ~12 GB VRAM

Browse: all media models · chat / LLM models