FLUX.1-dev vs SDXL-Lightning
Specs, VRAM requirements and download trends — updated 21 September 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | FLUX.1-dev | SDXL-Lightning |
|---|---|---|
| Parameters | 11.9 B | — |
| Architecture | — | — |
| Context length | — | — |
| Licence | other | openrail++ |
| Commercial use | Unknown | Conditional |
| Languages | 1 | — |
| Downloads 30d | 751,072 | 88,690 |
| Downloads all time | 33.6 M | 5.5 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | Yes — accept licence | No |
| First seen on the Hub | 2024-07-31 | 2024-02-20 |
Download trend
Daily snapshots, last 56 days (28 Jul – 21 Sep)
835 K80 K
FLUX.1-dev
SDXL-Lightning
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
SDXL-Lightning · fp16
54.9 GB / 24 GB
FLUX.1-dev · fp16
66.0 GB / 24 GB