FLUX.1-dev vs nunchaku-flux.1-schnell

Specs, VRAM requirements and download trends — updated 1 October 2026.

black-forest-labs · A · Open weights
Params
11.9 B
Context
—
30d
496 K
nunchaku-ai · B · Open weights
Params
—
Context
—
30d
28 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification FLUX.1-dev nunchaku-flux.1-schnell
Parameters 11.9 B —
Architecture — —
Context length — —
Licence other apache-2.0
Commercial use Unknown Allowed
Languages 1 1
Downloads 30d 495,623 27,603
Downloads all time 34.6 M 107 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated Yes — accept licence No
First seen on the Hub 2024-07-31 2025-07-17

Download trend

Daily snapshots, last 90 days (13 Aug – 10 Nov)

835 K20 K
FLUX.1-dev nunchaku-flux.1-schnell

VRAM side by side

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

nunchaku-flux.1-schnell · fp16 15.6 GB / 24 GB
✅ Runs comfortably
FLUX.1-dev · fp16 66.0 GB / 24 GB
❌ Won’t fit

Adjacent comparisons