FLUX.1-dev vs FLUX.1-dev-ControlNet-Union-Pro-2.0

Specs, VRAM requirements and download trends — updated 28 July 2026.

black-forest-labs · A

Params

11.9 B

Context

—

30d

547 K

Shakker-Labs · B

Params

2.1 B

Context

—

30d

16 K

Specification comparison

Differences are highlighted; identical values are muted.

Specification	FLUX.1-dev	FLUX.1-dev-ControlNet-Union-Pro-2.0
Parameters	11.9 B	2.1 B
Architecture	—	—
Context length	—	—
Licence	other	other
Commercial use	Unknown	Unknown
Languages	1	1
Downloads 30d	546,530	15,986
Downloads all time	32.5 M	502 K
Quantizations on the Hub	SAFETENSORS	SAFETENSORS
Gated	Yes — accept licence	No
First seen on the Hub	2024-07-31	2025-04-14

Daily snapshots, last 10 days (28 Jul – 6 Aug)

558 K16 K

FLUX.1-dev FLUX.1-dev-ControlNet-Union-Pro-2.0

On RTX 4090 · 24 GB · 8K context unless noted

FLUX.1-dev-ControlNet-Union-Pro-2.0 · fp16 5.5 GB / 24 GB

✅ Runs comfortably

FLUX.1-dev · fp16 66.0 GB / 24 GB

❌ Won’t fit