Model reference · open weights
stable-diffusion-3-medium is an open-weight image model from Stability AI. stable-diffusion-3-medium (BF16) weighs 36.9 GB; the smallest configuration that runs it is RTX 4090 24 GB.
Summary of the stabilityai/stable-diffusion-3-medium-diffusers model card, 2026-10-01. The estimate below is for another build of the family.
What it is
| Released by | Stability AI |
|---|---|
| Released | 2024-06-12 |
| Parameters | 2.1B |
| VRAM | 36.9 GB for the weights |
What it runs on
| Card | One image | Memory |
|---|---|---|
| RTX 3060 12 GB … RTX 4060 Ti 16 GB | does not fit | |
| RTX 3090 24 GB | tight (encoders offloaded) | 23.4 GB |
| RTX 4090 24 GB | tight (encoders offloaded) | 23.4 GB |
| RTX 5090 32 GB | fits (encoders offloaded) | 31.0 GB |
| L40S 48 GB | tight | 44.0 GB |
| A100 80 GB | fits | 78.2 GB |
| H100 80 GB | fits | 78.1 GB |
| RTX PRO 6000 Blackwell 96 GB | fits | 93.8 GB |
| DGX Spark (GB10) 128 GB unified | fits | 107 GB |
| H200 141 GB | fits | 138 GB |
| B200 180 GB | fits | 176 GB |
Builds
| Build | Params | Precision | Weights | Smallest setup |
|---|---|---|---|---|
| stable-diffusion-3-medium-diffusers ↗ | 2.1B | FP16 | 15.5 GB | RTX 4060 Ti 16 GB |
| stable-diffusion-3-medium (above) ↗ | — | BF16 | 36.9 GB | RTX 4090 24 GB |
How it works
Running it yourself
Rent a machine by the hour. How to run this model is on its model card.