[Original Repo](https://github.com/NVlabs/Sana)

- Uses Gemma2 2B as the text encoder

- Multiple resolutions and models available

- Compressed latent space (32 channels, /32 compression) - needs custom VAE

1. Download the model weights from the [Sana HF repo](https://huggingface.co/Efficient-Large-Model/Sana_1600M_1024px/tree/main/checkpoints) - the HF account has alternative models available too.

2. Place them in your checkpoints folder

3. Load them with the correct PixArt checkpoint loader

4. Use the "Gemma Loader" node - it should automatically download the requested model from Huggingface - Recommended to use the 4bit quantized model on CPU when low on memory.

5. Download the VAE from [here](https://huggingface.co/Efficient-Large-Model/dc_ae_f32c32_sana_1.0_diffusers/tree/main) and place it in your VAE folder after renaming it.

6. Use either the "Empty Sana Latent Image" or "Empty DCAE Latent Image" node for the latent input when doing txt2img.

[Sample workflow](https://github.com/user-attachments/files/18027854/SanaV1.json)


3. Place them in your checkpoints folder

4. Load them with the correct PixArt checkpoint loader

5. **Follow the T5v11 section of this readme** to set up the T5 text encoder