SSFM Model Variants

This repository contains four SSFM student transformer checkpoints for the Sana 1024px pipeline. The repository contains student transformer weights only; the base pipeline is downloaded separately.

Models

Directory	Variant	Supported steps	Notes
`SSFM_fixed_2`	Fixed-step SSFM	2	EMA student checkpoint
`SSFM_fixed_4`	Fixed-step SSFM	4	EMA student checkpoint
`SSFM_unified_24`	Unified SSFM	2, 4	EMA student checkpoint
`SSFM_unified_124`	Unified SSFM	1, 2, 4	EMA student checkpoint

Base model

Use the official Sana Sprint teacher pipeline:

Efficient-Large-Model/Sana_Sprint_0.6B_1024px_teacher_diffusers

The official base model is not duplicated in this repository.

File layout

Each model directory contains:

config.json
diffusion_pytorch_model.safetensors

Use the selected directory as the STUDENT_MODEL_DIR, FIXED2_MODEL_DIR, or FIXED4_MODEL_DIR path in the SSFM GitHub code.

License and attribution

These checkpoints are derived from the Sana/Sana-Sprint model family. Please follow the upstream model license and terms when using or redistributing the weights:

https://huggingface.co/Efficient-Large-Model/Sana_Sprint_0.6B_1024px_teacher_diffusers

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