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license: creativeml-openrail-m
library_name: diffusers
tags:
- stable-diffusion
- sd-1.5
- hyper-sd
- onnx
- text-to-image
- 4-step
- photorealistic
base_model: SG161222/Realistic_Vision_V6.0_B1_noVAE
pipeline_tag: text-to-image
language:
- en
---
# Realistic Vision V6 + Hyper-SD (4-step) — ONNX
ONNX export of [SG161222/Realistic_Vision_V6.0_B1_noVAE](https://huggingface.co/SG161222/Realistic_Vision_V6.0_B1_noVAE) paired with [stabilityai/sd-vae-ft-mse](https://huggingface.co/stabilityai/sd-vae-ft-mse) and the [ByteDance/Hyper-SD](https://huggingface.co/ByteDance/Hyper-SD) 4-step LoRA fused into the UNet. SD 1.5 architecture, 512×512 native, Euler scheduler, CFG = 1, **4 steps**.
Realistic Vision V6 is the photorealistic-portrait flagship of the SD 1.5 ecosystem. Trained on a narrow distribution (people, portraits, photography aesthetics), which is exactly *why* it's more stable across seeds than base SD 1.5 for those subjects.
> **Heads-up:** Realistic Vision is more NSFW-permissive than the other Hyper variants in this collection. Pair with content filters if that matters for your application.
Converted artifact. Training credit: SG161222 (Realistic Vision), Stability AI (sd-vae-ft-mse), ByteDance (Hyper-SD).
## What this repo contains
```
model_index.json
feature_extractor/
scheduler/
text_encoder/
tokenizer/
unet/ # RV6 UNet + Hyper-SD-15 4-step LoRA fused in
vae_decoder/ # sd-vae-ft-mse (RV6 ships without VAE — paired here)
vae_encoder/
```
## How it was produced
1. Load `SG161222/Realistic_Vision_V6.0_B1_noVAE` via `diffusers`.
2. Replace the (missing) VAE with `stabilityai/sd-vae-ft-mse` — the SD 1.5 community-standard fine-tuned VAE.
3. Load `ByteDance/Hyper-SD/Hyper-SD15-4steps-lora.safetensors` via `peft`, `fuse_lora()` into UNet.
4. `optimum-cli export onnx`.
Toolchain: `optimum 1.24.0`, `diffusers 0.31.0`, `transformers 4.45.2`, `torch 2.4.x` (CUDA 12.4). Conversion script: [`scripts/export-realistic-vision-hyper.ps1`](https://github.com/HeliosophLLC/DatumIngest/blob/main/scripts/export-realistic-vision-hyper.ps1).
## Inference notes
| Setting | Value |
|---|---|
| Scheduler | Euler |
| Steps | 4 |
| CFG / guidance scale | 1.0 |
| Negative prompt | Skip |
| Resolution | 512×512 native (best results); 768×768 OK |
## License
CreativeML OpenRAIL-M (SD 1.5 + Realistic Vision + Hyper-SD). License files included. By using this model you accept those terms. |